40687388392 has 32 divisors (see below), whose sum is σ = 87958843200. Its totient is φ = 17283135744.

The previous prime is 40687388389. The next prime is 40687388419. The reversal of 40687388392 is 29388378604.

It is a super-2 number, since 2×40687388392² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

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, 3208542 + ... + 3221197.

It is an arithmetic number, because the mean of its divisors is an integer number (2748713850).

Almost surely, 2^40687388392 is an apocalyptic number.

It is an amenable number.

40687388392 is an abundant number, since it is smaller than the sum of its proper divisors (47271454808).

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

40687388392 is a wasteful number, since it uses less digits than its factorization.

40687388392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429865 (or 6429861 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 40687388392 in words is "forty billion, six hundred eighty-seven million, three hundred eighty-eight thousand, three hundred ninety-two".