36621437636 has 24 divisors (see below), whose sum is σ = 75029289216. Its totient is φ = 15312098880.

The previous prime is 36621437599. The next prime is 36621437701. The reversal of 36621437636 is 63673412663.

It is a super-2 number, since 2×36621437636² (a number of 22 digits) contains 22 as substring.

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, 15948956 + ... + 15951251.

It is an arithmetic number, because the mean of its divisors is an integer number (3126220384).

Almost surely, 2^36621437636 is an apocalyptic number.

It is an amenable number.

36621437636 is an abundant number, since it is smaller than the sum of its proper divisors (38407851580).

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

36621437636 is a wasteful number, since it uses less digits than its factorization.

36621437636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31900259 (or 31900257 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 47.

The spelling of 36621437636 in words is "thirty-six billion, six hundred twenty-one million, four hundred thirty-seven thousand, six hundred thirty-six".