85811257670756 has 6 divisors (see below), whose sum is σ = 150169700923830. Its totient is φ = 42905628835376.

The previous prime is 85811257670731. The next prime is 85811257670773. The reversal of 85811257670756 is 65707675211858.

It can be written as a sum of positive squares in only one way, i.e., 83374430521600 + 2436827149156 = 9130960^2 + 1561034^2 .

It is a super-2 number, since 2×85811257670756² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10726407208841 + ... + 10726407208848.

It is an arithmetic number, because the mean of its divisors is an integer number (25028283487305).

Almost surely, 2^{85811257670756} is an apocalyptic number.

It is an amenable number.

85811257670756 is a deficient number, since it is larger than the sum of its proper divisors (64358443253074).

85811257670756 is a wasteful number, since it uses less digits than its factorization.

85811257670756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21452814417693 (or 21452814417691 counting only the distinct ones).

The product of its (nonzero) digits is 197568000, while the sum is 68.

The spelling of 85811257670756 in words is "eighty-five trillion, eight hundred eleven billion, two hundred fifty-seven million, six hundred seventy thousand, seven hundred fifty-six".