40431737128 has 32 divisors (see below), whose sum is σ = 78481612800. Its totient is φ = 19504338112.

The previous prime is 40431737119. The next prime is 40431737219. The reversal of 40431737128 is 82173713404.

40431737128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 253401 + ... + 380887.

It is an arithmetic number, because the mean of its divisors is an integer number (2452550400).

Almost surely, 2^40431737128 is an apocalyptic number.

It is an amenable number.

40431737128 is a deficient number, since it is larger than the sum of its proper divisors (38049875672).

40431737128 is a wasteful number, since it uses less digits than its factorization.

40431737128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128889 (or 128885 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 40431737128 in words is "forty billion, four hundred thirty-one million, seven hundred thirty-seven thousand, one hundred twenty-eight".