84977620040 has 64 divisors (see below), whose sum is σ = 197993818800. Its totient is φ = 32785579008.

The previous prime is 84977619989. The next prime is 84977620067. The reversal of 84977620040 is 4002677948.

It can be written as a sum of positive squares in 8 ways, for example, as 78840777796 + 6136842244 = 280786^2 + 78338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119782 + ... + 1193258.

Almost surely, 2^84977620040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84977620040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98996909400).

84977620040 is an abundant number, since it is smaller than the sum of its proper divisors (113016198760).

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

84977620040 is a wasteful number, since it uses less digits than its factorization.

84977620040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74514 (or 74510 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 84977620040 in words is "eighty-four billion, nine hundred seventy-seven million, six hundred twenty thousand, forty".