985440080520 has 320 divisors, whose sum is σ = 4008009962880. Its totient is φ = 211993749504.

The previous prime is 985440080473. The next prime is 985440080563. The reversal of 985440080520 is 25080044589.

985440080520 is a `hidden beast` number, since 9 + 8 + 5 + 4 + 40 + 0 + 80 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 892374 + ... + 1663493.

It is an arithmetic number, because the mean of its divisors is an integer number (12525031134).

Almost surely, 2^985440080520 is an apocalyptic number.

985440080520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

985440080520 is an abundant number, since it is smaller than the sum of its proper divisors (3022569882360).

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

985440080520 is a wasteful number, since it uses less digits than its factorization.

985440080520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555914 (or 2555901 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 985440080520 in words is "nine hundred eighty-five billion, four hundred forty million, eighty thousand, five hundred twenty".