85702531111 has 2 divisors, whose sum is σ = 85702531112. Its totient is φ = 85702531110.

The previous prime is 85702531027. The next prime is 85702531133. The reversal of 85702531111 is 11113520758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85702531111 - 2⁷ = 85702530983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85702537111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42851265555 + 42851265556.

It is an arithmetic number, because the mean of its divisors is an integer number (42851265556).

Almost surely, 2^85702531111 is an apocalyptic number.

85702531111 is a deficient number, since it is larger than the sum of its proper divisors (1).

85702531111 is an equidigital number, since it uses as much as digits as its factorization.

85702531111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 85702531111 in words is "eighty-five billion, seven hundred two million, five hundred thirty-one thousand, one hundred eleven".