26256664064 has 20 divisors (see below), whose sum is σ = 52462046604. Its totient is φ = 13128331776.

The previous prime is 26256664043. The next prime is 26256664079. The reversal of 26256664064 is 46046665262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640762 + ... + 25641785.

Almost surely, 2^26256664064 is an apocalyptic number.

It is an amenable number.

26256664064 is a deficient number, since it is larger than the sum of its proper divisors (26205382540).

26256664064 is an frugal number, since it uses more digits than its factorization.

26256664064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51282565 (or 51282549 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 26256664064 in words is "twenty-six billion, two hundred fifty-six million, six hundred sixty-four thousand, sixty-four".