40031872036 has 24 divisors (see below), whose sum is σ = 75682708920. Its totient is φ = 18417956352.

The previous prime is 40031872033. The next prime is 40031872037. The reversal of 40031872036 is 63027813004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1637820900 + 38394051136 = 40470^2 + 195944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40031871992 and 40031872010.

It is not an unprimeable number, because it can be changed into a prime (40031872033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197781 + ... + 1230748.

It is an arithmetic number, because the mean of its divisors is an integer number (3153446205).

Almost surely, 2^40031872036 is an apocalyptic number.

It is an amenable number.

40031872036 is a deficient number, since it is larger than the sum of its proper divisors (35650836884).

40031872036 is a wasteful number, since it uses less digits than its factorization.

40031872036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428863 (or 2428861 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 40031872036 in words is "forty billion, thirty-one million, eight hundred seventy-two thousand, thirty-six".