26561321314536 has 64 divisors (see below), whose sum is σ = 66600610272000. Its totient is φ = 8827471542528.

The previous prime is 26561321314481. The next prime is 26561321314579. The reversal of 26561321314536 is 63541312316562.

It is a super-3 number, since 3×26561321314536³ (a number of 41 digits) contains 333 as substring.

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, 81444630 + ... + 81770106.

It is an arithmetic number, because the mean of its divisors is an integer number (1040634535500).

Almost surely, 2^{26561321314536} is an apocalyptic number.

It is an amenable number.

26561321314536 is an abundant number, since it is smaller than the sum of its proper divisors (40039288957464).

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

26561321314536 is a wasteful number, since it uses less digits than its factorization.

26561321314536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335578 (or 335574 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 48.

The spelling of 26561321314536 in words is "twenty-six trillion, five hundred sixty-one billion, three hundred twenty-one million, three hundred fourteen thousand, five hundred thirty-six".