86672599857 has 10 divisors (see below), whose sum is σ = 129473883858. Its totient is φ = 57781733184.

The previous prime is 86672599813. The next prime is 86672599919. The reversal of 86672599857 is 75899527668.

It can be written as a sum of positive squares in only one way, i.e., 68728389921 + 17944209936 = 262161^2 + 133956^2 .

It is not a de Polignac number, because 86672599857 - 2¹⁵ = 86672567089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86672599807) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 535015968 + ... + 535016129.

Almost surely, 2^86672599857 is an apocalyptic number.

It is an amenable number.

86672599857 is a deficient number, since it is larger than the sum of its proper divisors (42801284001).

86672599857 is a wasteful number, since it uses less digits than its factorization.

86672599857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070032109 (or 1070032100 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 86672599857 in words is "eighty-six billion, six hundred seventy-two million, five hundred ninety-nine thousand, eight hundred fifty-seven".