6557838486480 has 60 divisors (see below), whose sum is σ = 22023407586180. Its totient is φ = 1748756929536.

The previous prime is 6557838486461. The next prime is 6557838486611. The reversal of 6557838486480 is 846848387556.

6557838486480 is a `hidden beast` number, since 6 + 5 + 5 + 78 + 38 + 48 + 6 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3862121091984 + 2695717394496 = 1965228^2 + 1641864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×6557838486480² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 6557838486399 and 6557838486408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4554053785 + ... + 4554055224.

It is an arithmetic number, because the mean of its divisors is an integer number (367056793103).

Almost surely, 2^{6557838486480} is an apocalyptic number.

6557838486480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6557838486480 is an abundant number, since it is smaller than the sum of its proper divisors (15465569099700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6557838486480 is a wasteful number, since it uses less digits than its factorization.

6557838486480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108109028 (or 9108109019 counting only the distinct ones).

The product of its (nonzero) digits is 1238630400, while the sum is 72.

The spelling of 6557838486480 in words is "six trillion, five hundred fifty-seven billion, eight hundred thirty-eight million, four hundred eighty-six thousand, four hundred eighty".