40185606072 has 32 divisors (see below), whose sum is σ = 104832017280. Its totient is φ = 12812801760.

The previous prime is 40185606059. The next prime is 40185606089. The reversal of 40185606072 is 27060658104.

It is a super-2 number, since 2×40185606072² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40185606072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36399454 + ... + 36400557.

It is an arithmetic number, because the mean of its divisors is an integer number (3276000540).

Almost surely, 2^40185606072 is an apocalyptic number.

It is an amenable number.

40185606072 is an abundant number, since it is smaller than the sum of its proper divisors (64646411208).

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

40185606072 is a wasteful number, since it uses less digits than its factorization.

40185606072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72800043 (or 72800039 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 40185606072 in words is "forty billion, one hundred eighty-five million, six hundred six thousand, seventy-two".