40164020238 has 32 divisors (see below), whose sum is σ = 84571920000. Its totient is φ = 12680961696.

The previous prime is 40164020231. The next prime is 40164020249. The reversal of 40164020238 is 83202046104.

It is a super-2 number, since 2×40164020238² (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 (40164020231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624745 + ... + 686027.

It is an arithmetic number, because the mean of its divisors is an integer number (2642872500).

Almost surely, 2^40164020238 is an apocalyptic number.

40164020238 is an abundant number, since it is smaller than the sum of its proper divisors (44407899762).

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

40164020238 is a wasteful number, since it uses less digits than its factorization.

40164020238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67056.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 40164020238 in words is "forty billion, one hundred sixty-four million, twenty thousand, two hundred thirty-eight".