43861112172 has 72 divisors (see below), whose sum is σ = 121028980800. Its totient is φ = 13850871696.

The previous prime is 43861112159. The next prime is 43861112177. The reversal of 43861112172 is 27121116834.

43861112172 is a `hidden beast` number, since 4 + 38 + 611 + 1 + 2 + 1 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (43861112177) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1169022 + ... + 1205957.

Almost surely, 2^43861112172 is an apocalyptic number.

It is an amenable number.

43861112172 is an abundant number, since it is smaller than the sum of its proper divisors (77167868628).

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

43861112172 is a wasteful number, since it uses less digits than its factorization.

43861112172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375017 (or 2375003 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The spelling of 43861112172 in words is "forty-three billion, eight hundred sixty-one million, one hundred twelve thousand, one hundred seventy-two".