7975775797 has 16 divisors (see below), whose sum is σ = 8946088704. Its totient is φ = 7047648000.

The previous prime is 7975775789. The next prime is 7975775807.

7975775797 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7975775797 - 2³ = 7975775789 is a prime.

It is a super-2 number, since 2×7975775797² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7975775707) 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 15 ways as a sum of consecutive naturals, for example, 89593 + ... + 154849.

It is an arithmetic number, because the mean of its divisors is an integer number (559130544).

Almost surely, 2^7975775797 is an apocalyptic number.

It is an amenable number.

7975775797 is a deficient number, since it is larger than the sum of its proper divisors (970312907).

7975775797 is a wasteful number, since it uses less digits than its factorization.

7975775797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65580.

The product of its digits is 238239225, while the sum is 70.

The square root of 7975775797 is about 89307.1990211315. The cubic root of 7975775797 is about 1997.9792754404.

The spelling of 7975775797 in words is "seven billion, nine hundred seventy-five million, seven hundred seventy-five thousand, seven hundred ninety-seven".