27977083968 has 28 divisors (see below), whose sum is σ = 74022701840. Its totient is φ = 9325694592.

The previous prime is 27977083963. The next prime is 27977083969. The reversal of 27977083968 is 86938077972.

It is a junction number, because it is equal to n+sod(n) for n = 27977083899 and 27977083908.

It is not an unprimeable number, because it can be changed into a prime (27977083963) 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, 72856798 + ... + 72857181.

Almost surely, 2^27977083968 is an apocalyptic number.

It is an amenable number.

27977083968 is an abundant number, since it is smaller than the sum of its proper divisors (46045617872).

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

27977083968 is a wasteful number, since it uses less digits than its factorization.

27977083968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145713994 (or 145713984 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 66.

The spelling of 27977083968 in words is "twenty-seven billion, nine hundred seventy-seven million, eighty-three thousand, nine hundred sixty-eight".