36531318656 has 32 divisors (see below), whose sum is σ = 83173986480. Its totient is φ = 15656279040.

The previous prime is 36531318631. The next prime is 36531318737. The reversal of 36531318656 is 65681313563.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 36531318656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20384885 + ... + 20386676.

Almost surely, 2^36531318656 is an apocalyptic number.

It is an amenable number.

36531318656 is an abundant number, since it is smaller than the sum of its proper divisors (46642667824).

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

36531318656 is an equidigital number, since it uses as much as digits as its factorization.

36531318656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40771582 (or 40771570 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 47.

The spelling of 36531318656 in words is "thirty-six billion, five hundred thirty-one million, three hundred eighteen thousand, six hundred fifty-six".