27765013777764 has 12 divisors (see below), whose sum is σ = 64785032148144. Its totient is φ = 9255004592584.

The previous prime is 27765013777717. The next prime is 27765013777789. The reversal of 27765013777764 is 46777731056772.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156875574062 + ... + 1156875574085.

It is an arithmetic number, because the mean of its divisors is an integer number (5398752679012).

Almost surely, 2^{27765013777764} is an apocalyptic number.

It is an amenable number.

27765013777764 is an abundant number, since it is smaller than the sum of its proper divisors (37020018370380).

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

27765013777764 is a wasteful number, since it uses less digits than its factorization.

27765013777764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313751148154 (or 2313751148152 counting only the distinct ones).

The product of its (nonzero) digits is 508243680, while the sum is 69.

The spelling of 27765013777764 in words is "twenty-seven trillion, seven hundred sixty-five billion, thirteen million, seven hundred seventy-seven thousand, seven hundred sixty-four".