40128237164 has 24 divisors (see below), whose sum is σ = 72665498640. Its totient is φ = 19367038656.

The previous prime is 40128237137. The next prime is 40128237181. The reversal of 40128237164 is 46173282104.

It is a super-2 number, since 2×40128237164² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405119 + ... + 494345.

It is an arithmetic number, because the mean of its divisors is an integer number (3027729110).

Almost surely, 2^40128237164 is an apocalyptic number.

It is an amenable number.

40128237164 is a deficient number, since it is larger than the sum of its proper divisors (32537261476).

40128237164 is a wasteful number, since it uses less digits than its factorization.

40128237164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93137 (or 93135 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 40128237164 in words is "forty billion, one hundred twenty-eight million, two hundred thirty-seven thousand, one hundred sixty-four".