7995555997 has 16 divisors (see below), whose sum is σ = 9406147968. Its totient is φ = 6700438080.

The previous prime is 7995555989. The next prime is 7995556007.

7995555997 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7995555997 - 2³ = 7995555989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7995555977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68623 + ... + 143875.

It is an arithmetic number, because the mean of its divisors is an integer number (587884248).

Almost surely, 2^7995555997 is an apocalyptic number.

It is an amenable number.

7995555997 is a deficient number, since it is larger than the sum of its proper divisors (1410591971).

7995555997 is a wasteful number, since it uses less digits than its factorization.

7995555997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76020.

The product of its digits is 200930625, while the sum is 70.

The square root of 7995555997 is about 89417.8729169957. The cubic root of 7995555997 is about 1999.6295978220.

The spelling of 7995555997 in words is "seven billion, nine hundred ninety-five million, five hundred fifty-five thousand, nine hundred ninety-seven".