86186779798 has 16 divisors (see below), whose sum is σ = 147788434080. Its totient is φ = 36927274176.

The previous prime is 86186779759. The next prime is 86186779823. The reversal of 86186779798 is 89797768168.

It is a super-2 number, since 2×86186779798² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772303 + ... + 876826.

It is an arithmetic number, because the mean of its divisors is an integer number (9236777130).

Almost surely, 2^86186779798 is an apocalyptic number.

86186779798 is a deficient number, since it is larger than the sum of its proper divisors (61601654282).

86186779798 is a wasteful number, since it uses less digits than its factorization.

86186779798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652871.

The product of its digits is 512096256, while the sum is 76.

The spelling of 86186779798 in words is "eighty-six billion, one hundred eighty-six million, seven hundred seventy-nine thousand, seven hundred ninety-eight".