7995995997 has 32 divisors (see below), whose sum is σ = 11863190016. Its totient is φ = 4749326400.

The previous prime is 7995995993. The next prime is 7995996007.

7995995997 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7995995997 - 2² = 7995995993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7995995993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2032122 + ... + 2036052.

It is an arithmetic number, because the mean of its divisors is an integer number (370724688).

Almost surely, 2^7995995997 is an apocalyptic number.

It is an amenable number.

7995995997 is a deficient number, since it is larger than the sum of its proper divisors (3867194019).

7995995997 is a wasteful number, since it uses less digits than its factorization.

7995995997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161.

The product of its digits is 651015225, while the sum is 78.

The square root of 7995995997 is about 89420.3332413831. Note that the first 3 decimals coincide. The cubic root of 7995995997 is about 1999.6662774010. Note that the first 3 decimals are identical.

The spelling of 7995995997 in words is "seven billion, nine hundred ninety-five million, nine hundred ninety-five thousand, nine hundred ninety-seven".