8557073980 has 96 divisors (see below), whose sum is σ = 22143873024. Its totient is φ = 2704852224.

The previous prime is 8557073977. The next prime is 8557074013. The reversal of 8557073980 is 893707558.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1786669 + ... + 1791451.

It is an arithmetic number, because the mean of its divisors is an integer number (230665344).

Almost surely, 2^8557073980 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 8557073980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11071936512).

8557073980 is an abundant number, since it is smaller than the sum of its proper divisors (13586799044).

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

8557073980 is a wasteful number, since it uses less digits than its factorization.

8557073980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795 (or 5793 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The square root of 8557073980 is about 92504.4538387207. The cubic root of 8557073980 is about 2045.3851359840.

The spelling of 8557073980 in words is "eight billion, five hundred fifty-seven million, seventy-three thousand, nine hundred eighty".