988057297920 has 704 divisors, whose sum is σ = 4147503667200. Its totient is φ = 194500362240.

The previous prime is 988057297907. The next prime is 988057297937. The reversal of 988057297920 is 29792750889.

It is a tau number, because it is divible by the number of its divisors (704).

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 22449696 + ... + 22493664.

Almost surely, 2^988057297920 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 988057297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073751833600).

988057297920 is an abundant number, since it is smaller than the sum of its proper divisors (3159446369280).

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

988057297920 is a wasteful number, since it uses less digits than its factorization.

988057297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44034 (or 44016 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 66.

The spelling of 988057297920 in words is "nine hundred eighty-eight billion, fifty-seven million, two hundred ninety-seven thousand, nine hundred twenty".