7957218699 has 12 divisors (see below), whose sum is σ = 11532992016. Its totient is φ = 5286705552.

The previous prime is 7957218691. The next prime is 7957218701. The reversal of 7957218699 is 9968127597.

It is not a de Polignac number, because 7957218699 - 2³ = 7957218691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7957218691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1506127 + ... + 1511400.

It is an arithmetic number, because the mean of its divisors is an integer number (961082668).

Almost surely, 2^7957218699 is an apocalyptic number.

7957218699 is a deficient number, since it is larger than the sum of its proper divisors (3575773317).

7957218699 is a wasteful number, since it uses less digits than its factorization.

7957218699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017826 (or 3017823 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 63.

The square root of 7957218699 is about 89203.2437694953. The cubic root of 7957218699 is about 1996.4285176365.

The spelling of 7957218699 in words is "seven billion, nine hundred fifty-seven million, two hundred eighteen thousand, six hundred ninety-nine".