36651585664 has 32 divisors (see below), whose sum is σ = 74106651600. Its totient is φ = 18052269312.

The previous prime is 36651585661. The next prime is 36651585679. The reversal of 36651585664 is 46658515663.

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

It is not an unprimeable number, because it can be changed into a prime (36651585661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128294 + ... + 2145445.

Almost surely, 2^36651585664 is an apocalyptic number.

It is an amenable number.

36651585664 is an abundant number, since it is smaller than the sum of its proper divisors (37455065936).

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

36651585664 is an equidigital number, since it uses as much as digits as its factorization.

36651585664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273820 (or 4273808 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 55.

The spelling of 36651585664 in words is "thirty-six billion, six hundred fifty-one million, five hundred eighty-five thousand, six hundred sixty-four".