8456135971 has 4 divisors (see below), whose sum is σ = 8953555752. Its totient is φ = 7958716192.

The previous prime is 8456135959. The next prime is 8456135983. The reversal of 8456135971 is 1795316548.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8456135959) and next prime (8456135983).

It is not a de Polignac number, because 8456135971 - 2⁵ = 8456135939 is a prime.

It is a super-2 number, since 2×8456135971² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8456135911) 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, 248709865 + ... + 248709898.

It is an arithmetic number, because the mean of its divisors is an integer number (2238388938).

Almost surely, 2^8456135971 is an apocalyptic number.

8456135971 is a deficient number, since it is larger than the sum of its proper divisors (497419781).

8456135971 is a wasteful number, since it uses less digits than its factorization.

8456135971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497419780.

The product of its digits is 907200, while the sum is 49.

The square root of 8456135971 is about 91957.2507799140. The cubic root of 8456135971 is about 2037.3109490545.

The spelling of 8456135971 in words is "eight billion, four hundred fifty-six million, one hundred thirty-five thousand, nine hundred seventy-one".