86638568545 has 32 divisors (see below), whose sum is σ = 110687005440. Its totient is φ = 64876062720.

The previous prime is 86638568507. The next prime is 86638568567. The reversal of 86638568545 is 54586583668.

It is not a de Polignac number, because 86638568545 - 2⁹ = 86638568033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14729005 + ... + 14734885.

It is an arithmetic number, because the mean of its divisors is an integer number (3458968920).

Almost surely, 2^86638568545 is an apocalyptic number.

86638568545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86638568545 is a deficient number, since it is larger than the sum of its proper divisors (24048436895).

86638568545 is a wasteful number, since it uses less digits than its factorization.

86638568545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its digits is 165888000, while the sum is 64.

The spelling of 86638568545 in words is "eighty-six billion, six hundred thirty-eight million, five hundred sixty-eight thousand, five hundred forty-five".