26689257156 has 48 divisors (see below), whose sum is σ = 62512490880. Its totient is φ = 8862543360.

The previous prime is 26689257143. The next prime is 26689257163. The reversal of 26689257156 is 65175298662.

It is a junction number, because it is equal to n+sod(n) for n = 26689257096 and 26689257105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4193905 + ... + 4200263.

It is an arithmetic number, because the mean of its divisors is an integer number (1302343560).

Almost surely, 2^26689257156 is an apocalyptic number.

It is an amenable number.

26689257156 is an abundant number, since it is smaller than the sum of its proper divisors (35823233724).

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

26689257156 is a wasteful number, since it uses less digits than its factorization.

26689257156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644 (or 7642 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 57.

The spelling of 26689257156 in words is "twenty-six billion, six hundred eighty-nine million, two hundred fifty-seven thousand, one hundred fifty-six".