84707969920 has 384 divisors, whose sum is σ = 258071832000. Its totient is φ = 26386956288.

The previous prime is 84707969917. The next prime is 84707969921. The reversal of 84707969920 is 2996970748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84707969921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15457741 + ... + 15463219.

Almost surely, 2^84707969920 is an apocalyptic number.

84707969920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84707969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129035916000).

84707969920 is an abundant number, since it is smaller than the sum of its proper divisors (173363862080).

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

84707969920 is a wasteful number, since it uses less digits than its factorization.

84707969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5539 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 84707969920 in words is "eighty-four billion, seven hundred seven million, nine hundred sixty-nine thousand, nine hundred twenty".