27055074640 has 40 divisors (see below), whose sum is σ = 68621509728. Its totient is φ = 9838208640.

The previous prime is 27055074637. The next prime is 27055074679. The reversal of 27055074640 is 4647055072.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×27055074640² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 27055074593 and 27055074602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15371322 + ... + 15373081.

Almost surely, 2^27055074640 is an apocalyptic number.

27055074640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27055074640 is an abundant number, since it is smaller than the sum of its proper divisors (41566435088).

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

27055074640 is a wasteful number, since it uses less digits than its factorization.

27055074640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30744427 (or 30744421 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 27055074640 in words is "twenty-seven billion, fifty-five million, seventy-four thousand, six hundred forty".