27777675388 has 12 divisors (see below), whose sum is σ = 48613795272. Its totient is φ = 13888019600.

The previous prime is 27777675383. The next prime is 27777675397. The reversal of 27777675388 is 88357677772.

It is a super-2 number, since 2×27777675388² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27777675383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124663 + ... + 266638.

It is an arithmetic number, because the mean of its divisors is an integer number (4051149606).

Almost surely, 2^27777675388 is an apocalyptic number.

It is an amenable number.

27777675388 is a deficient number, since it is larger than the sum of its proper divisors (20836119884).

27777675388 is a wasteful number, since it uses less digits than its factorization.

27777675388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409052 (or 409050 counting only the distinct ones).

The product of its digits is 193616640, while the sum is 67.

The spelling of 27777675388 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, three hundred eighty-eight".