84572041818 has 32 divisors (see below), whose sum is σ = 184531571712. Its totient is φ = 25626398000.

The previous prime is 84572041817. The next prime is 84572041819. The reversal of 84572041818 is 81814027548.

It is an interprime number because it is at equal distance from previous prime (84572041817) and next prime (84572041819).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84572041817) 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 15 ways as a sum of consecutive naturals, for example, 1739743 + ... + 1787693.

It is an arithmetic number, because the mean of its divisors is an integer number (5766611616).

Almost surely, 2^84572041818 is an apocalyptic number.

84572041818 is an abundant number, since it is smaller than the sum of its proper divisors (99959529894).

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

84572041818 is a wasteful number, since it uses less digits than its factorization.

84572041818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74690.

The product of its (nonzero) digits is 573440, while the sum is 48.

The spelling of 84572041818 in words is "eighty-four billion, five hundred seventy-two million, forty-one thousand, eight hundred eighteen".