7997685975 has 144 divisors (see below), whose sum is σ = 15388732320. Its totient is φ = 3962649600.

The previous prime is 7997685961. The next prime is 7997685991. The reversal of 7997685975 is 5795867997.

It is not a de Polignac number, because 7997685975 - 2⁹ = 7997685463 is a prime.

Its product of digits (300056400) is a multiple of the sum of its prime factors (450).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 37903620 + ... + 37903830.

Almost surely, 2^7997685975 is an apocalyptic number.

7997685975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7997685975 is a deficient number, since it is larger than the sum of its proper divisors (7391046345).

7997685975 is a wasteful number, since it uses less digits than its factorization.

7997685975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 442 counting only the distinct ones).

The product of its digits is 300056400, while the sum is 72.

The square root of 7997685975 is about 89429.7823714226. The cubic root of 7997685975 is about 1999.8071459876.

The spelling of 7997685975 in words is "seven billion, nine hundred ninety-seven million, six hundred eighty-five thousand, nine hundred seventy-five".