85534874231 has 2 divisors, whose sum is σ = 85534874232. Its totient is φ = 85534874230.

The previous prime is 85534874189. The next prime is 85534874237. The reversal of 85534874231 is 13247843558.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85534874231 is a prime.

It is a super-2 number, since 2×85534874231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85534874231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85534874237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42767437115 + 42767437116.

It is an arithmetic number, because the mean of its divisors is an integer number (42767437116).

Almost surely, 2^85534874231 is an apocalyptic number.

85534874231 is a deficient number, since it is larger than the sum of its proper divisors (1).

85534874231 is an equidigital number, since it uses as much as digits as its factorization.

85534874231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 50.

The spelling of 85534874231 in words is "eighty-five billion, five hundred thirty-four million, eight hundred seventy-four thousand, two hundred thirty-one".