40397517504 has 98 divisors (see below), whose sum is σ = 120190892460. Its totient is φ = 13465823616.

The previous prime is 40397517491. The next prime is 40397517529. The reversal of 40397517504 is 40571579304.

40397517504 is a `hidden beast` number, since 4 + 0 + 3 + 97 + 51 + 7 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40397517504.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 386274 + ... + 479585.

Almost surely, 2^40397517504 is an apocalyptic number.

It is an amenable number.

40397517504 is an abundant number, since it is smaller than the sum of its proper divisors (79793374956).

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

40397517504 is an frugal number, since it uses more digits than its factorization.

40397517504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865889 (or 865864 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 40397517504 in words is "forty billion, three hundred ninety-seven million, five hundred seventeen thousand, five hundred four".