104139280643 has 2 divisors, whose sum is σ = 104139280644. Its totient is φ = 104139280642.

The previous prime is 104139280639. The next prime is 104139280709. The reversal of 104139280643 is 346082931401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104139280643 - 2² = 104139280639 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104139280643.

It is not a weakly prime, because it can be changed into another prime (104139280543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52069640321 + 52069640322.

It is an arithmetic number, because the mean of its divisors is an integer number (52069640322).

Almost surely, 2^104139280643 is an apocalyptic number.

104139280643 is a deficient number, since it is larger than the sum of its proper divisors (1).

104139280643 is an equidigital number, since it uses as much as digits as its factorization.

104139280643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 104139280643 in words is "one hundred four billion, one hundred thirty-nine million, two hundred eighty thousand, six hundred forty-three".