85876217291 has 2 divisors, whose sum is σ = 85876217292. Its totient is φ = 85876217290.

The previous prime is 85876217279. The next prime is 85876217293. The reversal of 85876217291 is 19271267858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85876217291 - 2⁶ = 85876217227 is a prime.

It is a super-2 number, since 2×85876217291² (a number of 23 digits) contains 22 as substring.

Together with 85876217293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85876217293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42938108645 + 42938108646.

It is an arithmetic number, because the mean of its divisors is an integer number (42938108646).

Almost surely, 2^85876217291 is an apocalyptic number.

85876217291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85876217291 is an equidigital number, since it uses as much as digits as its factorization.

85876217291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 56.

The spelling of 85876217291 in words is "eighty-five billion, eight hundred seventy-six million, two hundred seventeen thousand, two hundred ninety-one".