40631131536 has 60 divisors (see below), whose sum is σ = 105577723248. Its totient is φ = 13464947072.

The previous prime is 40631131523. The next prime is 40631131579. The reversal of 40631131536 is 63513113604.

It is a junction number, because it is equal to n+sod(n) for n = 40631131497 and 40631131506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1422451 + ... + 1450733.

Almost surely, 2^40631131536 is an apocalyptic number.

It is an amenable number.

40631131536 is an abundant number, since it is smaller than the sum of its proper divisors (64946591712).

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

40631131536 is a wasteful number, since it uses less digits than its factorization.

40631131536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28640 (or 28461 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 40631131536 in words is "forty billion, six hundred thirty-one million, one hundred thirty-one thousand, five hundred thirty-six".