173520793139 has 2 divisors, whose sum is σ = 173520793140. Its totient is φ = 173520793138.

The previous prime is 173520793133. The next prime is 173520793163. The reversal of 173520793139 is 931397025371.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173520793139 is a prime.

It is not a weakly prime, because it can be changed into another prime (173520793133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86760396569 + 86760396570.

It is an arithmetic number, because the mean of its divisors is an integer number (86760396570).

Almost surely, 2^173520793139 is an apocalyptic number.

173520793139 is a deficient number, since it is larger than the sum of its proper divisors (1).

173520793139 is an equidigital number, since it uses as much as digits as its factorization.

173520793139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1071630, while the sum is 50.

The spelling of 173520793139 in words is "one hundred seventy-three billion, five hundred twenty million, seven hundred ninety-three thousand, one hundred thirty-nine".