40128932924 has 12 divisors (see below), whose sum is σ = 70228628400. Its totient is φ = 20063610528.

The previous prime is 40128932923. The next prime is 40128932927. The reversal of 40128932924 is 42923982104.

It is a happy number.

It is a super-2 number, since 2×40128932924² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40128932923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101984 + ... + 301095.

It is an arithmetic number, because the mean of its divisors is an integer number (5852385700).

Almost surely, 2^40128932924 is an apocalyptic number.

It is an amenable number.

40128932924 is a deficient number, since it is larger than the sum of its proper divisors (30099695476).

40128932924 is a wasteful number, since it uses less digits than its factorization.

40128932924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427972 (or 427970 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 40128932924 in words is "forty billion, one hundred twenty-eight million, nine hundred thirty-two thousand, nine hundred twenty-four".