9976961975 has 6 divisors (see below), whose sum is σ = 12371432880. Its totient is φ = 7981569560.

The previous prime is 9976961971. The next prime is 9976961983. The reversal of 9976961975 is 5791696799.

It is not a de Polignac number, because 9976961975 - 2² = 9976961971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976961971) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 199539215 + ... + 199539264.

It is an arithmetic number, because the mean of its divisors is an integer number (2061905480).

Almost surely, 2^9976961975 is an apocalyptic number.

9976961975 is a deficient number, since it is larger than the sum of its proper divisors (2394470905).

9976961975 is a wasteful number, since it uses less digits than its factorization.

9976961975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399078489 (or 399078484 counting only the distinct ones).

The product of its digits is 57868020, while the sum is 68.

The square root of 9976961975 is about 99884.7434546438. The cubic root of 9976961975 is about 2152.7789538755.

The spelling of 9976961975 in words is "nine billion, nine hundred seventy-six million, nine hundred sixty-one thousand, nine hundred seventy-five".