27750765660 has 48 divisors (see below), whose sum is σ = 82272861216. Its totient is φ = 6964897792.

The previous prime is 27750765631. The next prime is 27750765673. The reversal of 27750765660 is 6656705772.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 13602297 + ... + 13604336.

It is an arithmetic number, because the mean of its divisors is an integer number (1714017942).

Almost surely, 2^27750765660 is an apocalyptic number.

27750765660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27750765660 is an abundant number, since it is smaller than the sum of its proper divisors (54522095556).

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

27750765660 is a wasteful number, since it uses less digits than its factorization.

27750765660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27206662 (or 27206660 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 51.

The spelling of 27750765660 in words is "twenty-seven billion, seven hundred fifty million, seven hundred sixty-five thousand, six hundred sixty".