86691313583 has 4 divisors (see below), whose sum is σ = 99075786960. Its totient is φ = 74306840208.

The previous prime is 86691313571. The next prime is 86691313609. The reversal of 86691313583 is 38531319668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86691313583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86691313283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6192236678 + ... + 6192236691.

It is an arithmetic number, because the mean of its divisors is an integer number (24768946740).

Almost surely, 2^86691313583 is an apocalyptic number.

86691313583 is a deficient number, since it is larger than the sum of its proper divisors (12384473377).

86691313583 is a wasteful number, since it uses less digits than its factorization.

86691313583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384473376.

The product of its digits is 2799360, while the sum is 53.

The spelling of 86691313583 in words is "eighty-six billion, six hundred ninety-one million, three hundred thirteen thousand, five hundred eighty-three".