917411980520 has 384 divisors, whose sum is σ = 2648064960000. Its totient is φ = 284042723328.

The previous prime is 917411980481. The next prime is 917411980547. The reversal of 917411980520 is 25089114719.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85311464 + ... + 85322216.

It is an arithmetic number, because the mean of its divisors is an integer number (6896002500).

Almost surely, 2^917411980520 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 917411980520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324032480000).

917411980520 is an abundant number, since it is smaller than the sum of its proper divisors (1730652979480).

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

917411980520 is a wasteful number, since it uses less digits than its factorization.

917411980520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905 (or 10894 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 917411980520 in words is "nine hundred seventeen billion, four hundred eleven million, nine hundred eighty thousand, five hundred twenty".