86357579697 has 12 divisors (see below), whose sum is σ = 125842610244. Its totient is φ = 57062234880.

The previous prime is 86357579677. The next prime is 86357579699. The reversal of 86357579697 is 79697575368.

It can be written as a sum of positive squares in 2 ways, for example, as 3349631376 + 83007948321 = 57876^2 + 288111^2 .

It is not a de Polignac number, because 86357579697 - 2¹⁶ = 86357514161 is a prime.

It is a super-2 number, since 2×86357579697² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86357579699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42456004 + ... + 42458037.

It is an arithmetic number, because the mean of its divisors is an integer number (10486884187).

Almost surely, 2^86357579697 is an apocalyptic number.

It is an amenable number.

86357579697 is a deficient number, since it is larger than the sum of its proper divisors (39485030547).

86357579697 is a wasteful number, since it uses less digits than its factorization.

86357579697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84914160 (or 84914157 counting only the distinct ones).

The product of its digits is 600112800, while the sum is 72.

The spelling of 86357579697 in words is "eighty-six billion, three hundred fifty-seven million, five hundred seventy-nine thousand, six hundred ninety-seven".