26992538568 has 48 divisors (see below), whose sum is σ = 75625652700. Its totient is φ = 8687253120.

The previous prime is 26992538567. The next prime is 26992538623. The reversal of 26992538568 is 86583529962.

26992538568 is a `hidden beast` number, since 2 + 6 + 9 + 92 + 538 + 5 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26745985764 + 246552804 = 163542^2 + 15702^2 .

It is not an unprimeable number, because it can be changed into a prime (26992538561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6461643 + ... + 6465818.

Almost surely, 2^26992538568 is an apocalyptic number.

It is an amenable number.

26992538568 is an abundant number, since it is smaller than the sum of its proper divisors (48633114132).

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

26992538568 is a wasteful number, since it uses less digits than its factorization.

26992538568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927502 (or 12927495 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The spelling of 26992538568 in words is "twenty-six billion, nine hundred ninety-two million, five hundred thirty-eight thousand, five hundred sixty-eight".