40137635232 has 36 divisors (see below), whose sum is σ = 114141401010. Its totient is φ = 13379211648.

The previous prime is 40137635231. The next prime is 40137635249. The reversal of 40137635232 is 23253673104.

40137635232 is a `hidden beast` number, since 4 + 0 + 13 + 7 + 635 + 2 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26802928656 + 13334706576 = 163716^2 + 115476^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40137635232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40137635231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69683107 + ... + 69683682.

Almost surely, 2^40137635232 is an apocalyptic number.

It is an amenable number.

40137635232 is an abundant number, since it is smaller than the sum of its proper divisors (74003765778).

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

40137635232 is a wasteful number, since it uses less digits than its factorization.

40137635232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139366805 (or 139366794 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The spelling of 40137635232 in words is "forty billion, one hundred thirty-seven million, six hundred thirty-five thousand, two hundred thirty-two".