7957980871 has 4 divisors (see below), whose sum is σ = 8032354632. Its totient is φ = 7883607112.

The previous prime is 7957980859. The next prime is 7957980907. The reversal of 7957980871 is 1780897597.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1780897597 = 17317 ⋅102841.

It is a cyclic number.

It is not a de Polignac number, because 7957980871 - 2¹⁹ = 7957456583 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 (7957980671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37186720 + ... + 37186933.

It is an arithmetic number, because the mean of its divisors is an integer number (2008088658).

Almost surely, 2^7957980871 is an apocalyptic number.

7957980871 is a deficient number, since it is larger than the sum of its proper divisors (74373761).

7957980871 is a wasteful number, since it uses less digits than its factorization.

7957980871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74373760.

The product of its (nonzero) digits is 8890560, while the sum is 61.

The square root of 7957980871 is about 89207.5157764187. The cubic root of 7957980871 is about 1996.4922573842.

The spelling of 7957980871 in words is "seven billion, nine hundred fifty-seven million, nine hundred eighty thousand, eight hundred seventy-one".