8557965971 has 24 divisors (see below), whose sum is σ = 9527708160. Its totient is φ = 7670698112.

The previous prime is 8557965953. The next prime is 8557966031. The reversal of 8557965971 is 1795697558.

It is a de Polignac number, because none of the positive numbers 2^k-8557965971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8557965371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1585940 + ... + 1591326.

It is an arithmetic number, because the mean of its divisors is an integer number (396987840).

Almost surely, 2^8557965971 is an apocalyptic number.

8557965971 is a deficient number, since it is larger than the sum of its proper divisors (969742189).

8557965971 is a wasteful number, since it uses less digits than its factorization.

8557965971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5683 (or 5666 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 62.

The square root of 8557965971 is about 92509.2750539101. The cubic root of 8557965971 is about 2045.4562039583.

The spelling of 8557965971 in words is "eight billion, five hundred fifty-seven million, nine hundred sixty-five thousand, nine hundred seventy-one".