84918985408 has 28 divisors (see below), whose sum is σ = 170884516752. Its totient is φ = 41861469440.

The previous prime is 84918985397. The next prime is 84918985421. The reversal of 84918985408 is 80458981948.

It is a super-2 number, since 2×84918985408² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 84918985408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9339535 + ... + 9348622.

Almost surely, 2^84918985408 is an apocalyptic number.

It is an amenable number.

84918985408 is an abundant number, since it is smaller than the sum of its proper divisors (85965531344).

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

84918985408 is a wasteful number, since it uses less digits than its factorization.

84918985408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18688240 (or 18688230 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 84918985408 in words is "eighty-four billion, nine hundred eighteen million, nine hundred eighty-five thousand, four hundred eight".