26540771264 has 56 divisors (see below), whose sum is σ = 60207497568. Its totient is φ = 11371438080.

The previous prime is 26540771249. The next prime is 26540771311. The reversal of 26540771264 is 46217704562.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2338724 + ... + 2350044.

Almost surely, 2^26540771264 is an apocalyptic number.

It is an amenable number.

26540771264 is an abundant number, since it is smaller than the sum of its proper divisors (33666726304).

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

26540771264 is a wasteful number, since it uses less digits than its factorization.

26540771264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16573 (or 16563 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 26540771264 in words is "twenty-six billion, five hundred forty million, seven hundred seventy-one thousand, two hundred sixty-four".