36440615720 has 16 divisors (see below), whose sum is σ = 81991385460. Its totient is φ = 14576246272.

The previous prime is 36440615719. The next prime is 36440615773. The reversal of 36440615720 is 2751604463.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35871602404 + 569013316 = 189398^2 + 23854^2 .

It is a super-2 number, since 2×36440615720² (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 3 ways as a sum of consecutive naturals, for example, 455507657 + ... + 455507736.

Almost surely, 2^36440615720 is an apocalyptic number.

It is an amenable number.

36440615720 is an abundant number, since it is smaller than the sum of its proper divisors (45550769740).

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

36440615720 is a wasteful number, since it uses less digits than its factorization.

36440615720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911015404 (or 911015400 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 36440615720 in words is "thirty-six billion, four hundred forty million, six hundred fifteen thousand, seven hundred twenty".