85758111524831 has 4 divisors (see below), whose sum is σ = 85758139111632. Its totient is φ = 85758083938032.

The previous prime is 85758111524797. The next prime is 85758111524837. The reversal of 85758111524831 is 13842511185758.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85758111524831 is a prime.

It is a super-2 number, since 2×85758111524831² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85758111524837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8437070 + ... + 15578843.

It is an arithmetic number, because the mean of its divisors is an integer number (21439534777908).

Almost surely, 2^{85758111524831} is an apocalyptic number.

85758111524831 is a deficient number, since it is larger than the sum of its proper divisors (27586801).

85758111524831 is a wasteful number, since it uses less digits than its factorization.

85758111524831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27586800.

The product of its digits is 10752000, while the sum is 59.

The spelling of 85758111524831 in words is "eighty-five trillion, seven hundred fifty-eight billion, one hundred eleven million, five hundred twenty-four thousand, eight hundred thirty-one".