7997612718 has 16 divisors (see below), whose sum is σ = 16233960960. Its totient is φ = 2626081656.

The previous prime is 7997612687. The next prime is 7997612723. The reversal of 7997612718 is 8172167997.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9946878 + ... + 9947681.

It is an arithmetic number, because the mean of its divisors is an integer number (1014622560).

Almost surely, 2^7997612718 is an apocalyptic number.

7997612718 is an abundant number, since it is smaller than the sum of its proper divisors (8236348242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7997612718 is a wasteful number, since it uses less digits than its factorization.

7997612718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19894631.

The product of its digits is 2667168, while the sum is 57.

The square root of 7997612718 is about 89429.3727921649. The cubic root of 7997612718 is about 1999.8010400415.

The spelling of 7997612718 in words is "seven billion, nine hundred ninety-seven million, six hundred twelve thousand, seven hundred eighteen".