36644666072 has 48 divisors (see below), whose sum is σ = 79977555000. Its totient is φ = 15694826112.

The previous prime is 36644666057. The next prime is 36644666101. The reversal of 36644666072 is 27066644663.

It is a self number, because there is not a number n which added to its sum of digits gives 36644666072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 601679 + ... + 659777.

Almost surely, 2^36644666072 is an apocalyptic number.

It is an amenable number.

36644666072 is an abundant number, since it is smaller than the sum of its proper divisors (43332888928).

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

36644666072 is a wasteful number, since it uses less digits than its factorization.

36644666072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59728 (or 59717 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 50.

The spelling of 36644666072 in words is "thirty-six billion, six hundred forty-four million, six hundred sixty-six thousand, seventy-two".