86145681618 has 12 divisors (see below), whose sum is σ = 186648976878. Its totient is φ = 28715227200.

The previous prime is 86145681563. The next prime is 86145681631. The reversal of 86145681618 is 81618654168.

86145681618 is a `hidden beast` number, since 8 + 6 + 14 + 5 + 6 + 8 + 1 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84944851209 + 1200830409 = 291453^2 + 34653^2 .

It is a super-2 number, since 2×86145681618² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2392935583 + ... + 2392935618.

Almost surely, 2^86145681618 is an apocalyptic number.

86145681618 is an abundant number, since it is smaller than the sum of its proper divisors (100503295260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86145681618 is a wasteful number, since it uses less digits than its factorization.

86145681618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785871209 (or 4785871206 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 86145681618 in words is "eighty-six billion, one hundred forty-five million, six hundred eighty-one thousand, six hundred eighteen".