6555321136 has 60 divisors (see below), whose sum is σ = 15911085792. Its totient is φ = 2593309824.

The previous prime is 6555321131. The next prime is 6555321139. The reversal of 6555321136 is 6311235556.

It is a junction number, because it is equal to n+sod(n) for n = 6555321095 and 6555321104.

It is not an unprimeable number, because it can be changed into a prime (6555321131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311400 + ... + 331783.

Almost surely, 2^6555321136 is an apocalyptic number.

It is an amenable number.

6555321136 is an abundant number, since it is smaller than the sum of its proper divisors (9355764656).

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

6555321136 is a wasteful number, since it uses less digits than its factorization.

6555321136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643218 (or 643205 counting only the distinct ones).

The product of its digits is 81000, while the sum is 37.

The square root of 6555321136 is about 80964.9376952765. The cubic root of 6555321136 is about 1871.5351607796.

The spelling of 6555321136 in words is "six billion, five hundred fifty-five million, three hundred twenty-one thousand, one hundred thirty-six".