84874478688 has 72 divisors (see below), whose sum is σ = 244964269368. Its totient is φ = 27869225472.

The previous prime is 84874478671. The next prime is 84874478693. The reversal of 84874478688 is 88687447848.

84874478688 is a `hidden beast` number, since 8 + 4 + 8 + 74 + 478 + 6 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2179981 + ... + 2218572.

It is an arithmetic number, because the mean of its divisors is an integer number (3402281519).

Almost surely, 2^84874478688 is an apocalyptic number.

It is an amenable number.

84874478688 is an abundant number, since it is smaller than the sum of its proper divisors (160089790680).

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

84874478688 is a wasteful number, since it uses less digits than its factorization.

84874478688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398636 (or 4398625 counting only the distinct ones).

The product of its digits is 616562688, while the sum is 72.

The spelling of 84874478688 in words is "eighty-four billion, eight hundred seventy-four million, four hundred seventy-eight thousand, six hundred eighty-eight".