7957666005 has 16 divisors (see below), whose sum is σ = 12948068160. Its totient is φ = 4172154368.

The previous prime is 7957665959. The next prime is 7957666007. The reversal of 7957666005 is 5006667597.

It is a cyclic number.

It is not a de Polignac number, because 7957666005 - 2²⁰ = 7956617429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7957666007) 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, 4494972 + ... + 4496741.

It is an arithmetic number, because the mean of its divisors is an integer number (809254260).

Almost surely, 2^7957666005 is an apocalyptic number.

It is an amenable number.

7957666005 is a deficient number, since it is larger than the sum of its proper divisors (4990402155).

7957666005 is a wasteful number, since it uses less digits than its factorization.

7957666005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8991780.

The product of its (nonzero) digits is 2381400, while the sum is 51.

The square root of 7957666005 is about 89205.7509637131. The cubic root of 7957666005 is about 1996.4659259218.

The spelling of 7957666005 in words is "seven billion, nine hundred fifty-seven million, six hundred sixty-six thousand, five".