9972881775 has 72 divisors (see below), whose sum is σ = 18515012880. Its totient is φ = 5125317120.

The previous prime is 9972881761. The next prime is 9972881797. The reversal of 9972881775 is 5771882799.

It is not a de Polignac number, because 9972881775 - 2⁴ = 9972881759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4194387 + ... + 4196763.

Almost surely, 2^9972881775 is an apocalyptic number.

9972881775 is a deficient number, since it is larger than the sum of its proper divisors (8542131105).

9972881775 is a wasteful number, since it uses less digits than its factorization.

9972881775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065 (or 3057 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 63.

The square root of 9972881775 is about 99864.3168253806. The cubic root of 9972881775 is about 2152.4854454778.

It can be divided in two parts, 99728 and 81775, that added together give a triangular number (181503 = T₆₀₂).

The spelling of 9972881775 in words is "nine billion, nine hundred seventy-two million, eight hundred eighty-one thousand, seven hundred seventy-five".