9975572816 has 40 divisors (see below), whose sum is σ = 21090540000. Its totient is φ = 4533102720.

The previous prime is 9975572809. The next prime is 9975572821. The reversal of 9975572816 is 6182755799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006895 + ... + 1016753.

It is an arithmetic number, because the mean of its divisors is an integer number (527263500).

Almost surely, 2^9975572816 is an apocalyptic number.

It is an amenable number.

9975572816 is an abundant number, since it is smaller than the sum of its proper divisors (11114967184).

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

9975572816 is a wasteful number, since it uses less digits than its factorization.

9975572816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15627 (or 15621 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 59.

The square root of 9975572816 is about 99877.7894028497. The cubic root of 9975572816 is about 2152.6790339775.

The spelling of 9975572816 in words is "nine billion, nine hundred seventy-five million, five hundred seventy-two thousand, eight hundred sixteen".