84924939820 has 192 divisors, whose sum is σ = 210251575296. Its totient is φ = 28217548800.

The previous prime is 84924939809. The next prime is 84924939833. The reversal of 84924939820 is 2893942948.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 174383617 + ... + 174384103.

It is an arithmetic number, because the mean of its divisors is an integer number (1095060288).

Almost surely, 2^84924939820 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 84924939820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105125787648).

84924939820 is an abundant number, since it is smaller than the sum of its proper divisors (125326635476).

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

84924939820 is a wasteful number, since it uses less digits than its factorization.

84924939820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 84924939820 in words is "eighty-four billion, nine hundred twenty-four million, nine hundred thirty-nine thousand, eight hundred twenty".