26311564564 has 72 divisors (see below), whose sum is σ = 51879679488. Its totient is φ = 11648693760.

The previous prime is 26311564537. The next prime is 26311564589. The reversal of 26311564564 is 46546511362.

It is a self number, because there is not a number n which added to its sum of digits gives 26311564564.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1613757 + ... + 1629979.

It is an arithmetic number, because the mean of its divisors is an integer number (720551104).

Almost surely, 2^26311564564 is an apocalyptic number.

It is an amenable number.

26311564564 is a deficient number, since it is larger than the sum of its proper divisors (25568114924).

26311564564 is a wasteful number, since it uses less digits than its factorization.

26311564564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16345 (or 16326 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The spelling of 26311564564 in words is "twenty-six billion, three hundred eleven million, five hundred sixty-four thousand, five hundred sixty-four".