27956074977 has 6 divisors (see below), whose sum is σ = 40380997202. Its totient is φ = 18637383312.

The previous prime is 27956074943. The next prime is 27956074999. The reversal of 27956074977 is 77947065972.

27956074977 is a `hidden beast` number, since 27 + 9 + 560 + 7 + 49 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27590538816 + 365536161 = 166104^2 + 19119^2 .

It is not a de Polignac number, because 27956074977 - 2¹⁰ = 27956073953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27956074577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1553115268 + ... + 1553115285.

Almost surely, 2^27956074977 is an apocalyptic number.

It is an amenable number.

27956074977 is a deficient number, since it is larger than the sum of its proper divisors (12424922225).

27956074977 is a wasteful number, since it uses less digits than its factorization.

27956074977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106230559 (or 3106230556 counting only the distinct ones).

The product of its (nonzero) digits is 46675440, while the sum is 63.

The spelling of 27956074977 in words is "twenty-seven billion, nine hundred fifty-six million, seventy-four thousand, nine hundred seventy-seven".