84268553878980 has 72 divisors (see below), whose sum is σ = 259947064540800. Its totient is φ = 22090739545152.

The previous prime is 84268553878919. The next prime is 84268553878981. The reversal of 84268553878980 is 8987835586248.

It is a happy number.

84268553878980 is a `hidden beast` number, since 8 + 4 + 2 + 6 + 8 + 5 + 538 + 78 + 9 + 8 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 84268553878980.

It is not an unprimeable number, because it can be changed into a prime (84268553878981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3967435420 + ... + 3967456659.

It is an arithmetic number, because the mean of its divisors is an integer number (3610375896400).

Almost surely, 2^{84268553878980} is an apocalyptic number.

It is an amenable number.

84268553878980 is an abundant number, since it is smaller than the sum of its proper divisors (175678510661820).

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

84268553878980 is a wasteful number, since it uses less digits than its factorization.

84268553878980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934892153 (or 7934892148 counting only the distinct ones).

The product of its (nonzero) digits is 7431782400, while the sum is 81.

The spelling of 84268553878980 in words is "eighty-four trillion, two hundred sixty-eight billion, five hundred fifty-three million, eight hundred seventy-eight thousand, nine hundred eighty".