26157643656 has 16 divisors (see below), whose sum is σ = 65394109200. Its totient is φ = 8719214544.

The previous prime is 26157643637. The next prime is 26157643661. The reversal of 26157643656 is 65634675162.

It is a super-3 number, since 3×26157643656³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 26157643599 and 26157643608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544950886 + ... + 544950933.

It is an arithmetic number, because the mean of its divisors is an integer number (4087131825).

Almost surely, 2^26157643656 is an apocalyptic number.

It is an amenable number.

26157643656 is an abundant number, since it is smaller than the sum of its proper divisors (39236465544).

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

26157643656 is a wasteful number, since it uses less digits than its factorization.

26157643656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089901828 (or 1089901824 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 51.

The spelling of 26157643656 in words is "twenty-six billion, one hundred fifty-seven million, six hundred forty-three thousand, six hundred fifty-six".