26881536681738 has 64 divisors (see below), whose sum is σ = 59772239907840. Its totient is φ = 8955190062000.

The previous prime is 26881536681709. The next prime is 26881536681751. The reversal of 26881536681738 is 83718663518862.

26881536681738 is a `hidden beast` number, since 2 + 6 + 8 + 8 + 1 + 536 + 6 + 81 + 7 + 3 + 8 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735434563 + ... + 735471113.

It is an arithmetic number, because the mean of its divisors is an integer number (933941248560).

Almost surely, 2^{26881536681738} is an apocalyptic number.

26881536681738 is an abundant number, since it is smaller than the sum of its proper divisors (32890703226102).

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

26881536681738 is a wasteful number, since it uses less digits than its factorization.

26881536681738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44280 (or 44274 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 26881536681738 in words is "twenty-six trillion, eight hundred eighty-one billion, five hundred thirty-six million, six hundred eighty-one thousand, seven hundred thirty-eight".