27799977407768 has 32 divisors (see below), whose sum is σ = 54872854444800. Its totient is φ = 13167335635488.

The previous prime is 27799977407759. The next prime is 27799977407791. The reversal of 27799977407768 is 86770477999772.

It is a super-2 number, since 2×27799977407768² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5593196 + ... + 9321147.

It is an arithmetic number, because the mean of its divisors is an integer number (1714776701400).

Almost surely, 2^{27799977407768} is an apocalyptic number.

It is an amenable number.

27799977407768 is a deficient number, since it is larger than the sum of its proper divisors (27072877037032).

27799977407768 is a wasteful number, since it uses less digits than its factorization.

27799977407768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14926631 (or 14926627 counting only the distinct ones).

The product of its (nonzero) digits is 32934190464, while the sum is 89.

The spelling of 27799977407768 in words is "twenty-seven trillion, seven hundred ninety-nine billion, nine hundred seventy-seven million, four hundred seven thousand, seven hundred sixty-eight".