26645616536 has 64 divisors (see below), whose sum is σ = 65952506880. Its totient is φ = 9770734080.

The previous prime is 26645616497. The next prime is 26645616551. The reversal of 26645616536 is 63561654662.

It is a congruent number.

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, 1261760 + ... + 1282703.

It is an arithmetic number, because the mean of its divisors is an integer number (1030507920).

Almost surely, 2^26645616536 is an apocalyptic number.

It is an amenable number.

26645616536 is an abundant number, since it is smaller than the sum of its proper divisors (39306890344).

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

26645616536 is a wasteful number, since it uses less digits than its factorization.

26645616536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544504 (or 2544500 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 50.

The spelling of 26645616536 in words is "twenty-six billion, six hundred forty-five million, six hundred sixteen thousand, five hundred thirty-six".