27455512680 has 64 divisors (see below), whose sum is σ = 91518379200. Its totient is φ = 7321469760.

The previous prime is 27455512661. The next prime is 27455512697. The reversal of 27455512680 is 8621555472.

27455512680 is a `hidden beast` number, since 2 + 7 + 4 + 55 + 512 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12709806 + ... + 12711965.

It is an arithmetic number, because the mean of its divisors is an integer number (1429974675).

Almost surely, 2^27455512680 is an apocalyptic number.

27455512680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27455512680 is an abundant number, since it is smaller than the sum of its proper divisors (64062866520).

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

27455512680 is a wasteful number, since it uses less digits than its factorization.

27455512680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25421791 (or 25421781 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 27455512680 in words is "twenty-seven billion, four hundred fifty-five million, five hundred twelve thousand, six hundred eighty".