139616564443 has 2 divisors, whose sum is σ = 139616564444. Its totient is φ = 139616564442.

The previous prime is 139616564291. The next prime is 139616564449. The reversal of 139616564443 is 344465616931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139616564443 is a prime.

It is not a weakly prime, because it can be changed into another prime (139616564449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69808282221 + 69808282222.

It is an arithmetic number, because the mean of its divisors is an integer number (69808282222).

Almost surely, 2^139616564443 is an apocalyptic number.

139616564443 is a deficient number, since it is larger than the sum of its proper divisors (1).

139616564443 is an equidigital number, since it uses as much as digits as its factorization.

139616564443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 52.

The spelling of 139616564443 in words is "one hundred thirty-nine billion, six hundred sixteen million, five hundred sixty-four thousand, four hundred forty-three".