85871552791 has 2 divisors, whose sum is σ = 85871552792. Its totient is φ = 85871552790.

The previous prime is 85871552737. The next prime is 85871552801. The reversal of 85871552791 is 19725517858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85871552791 - 2⁹ = 85871552279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85871552731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42935776395 + 42935776396.

It is an arithmetic number, because the mean of its divisors is an integer number (42935776396).

Almost surely, 2^85871552791 is an apocalyptic number.

85871552791 is a deficient number, since it is larger than the sum of its proper divisors (1).

85871552791 is an equidigital number, since it uses as much as digits as its factorization.

85871552791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056000, while the sum is 58.

The spelling of 85871552791 in words is "eighty-five billion, eight hundred seventy-one million, five hundred fifty-two thousand, seven hundred ninety-one".