172913345643 has 16 divisors (see below), whose sum is σ = 234513328896. Its totient is φ = 113308564320.

The previous prime is 172913345617. The next prime is 172913345659. The reversal of 172913345643 is 346543319271.

It is not a de Polignac number, because 172913345643 - 2²⁸ = 172644910187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172913345592 and 172913345601.

It is not an unprimeable number, because it can be changed into a prime (172913345663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1713463 + ... + 1811568.

It is an arithmetic number, because the mean of its divisors is an integer number (14657083056).

Almost surely, 2^172913345643 is an apocalyptic number.

172913345643 is a deficient number, since it is larger than the sum of its proper divisors (61599983253).

172913345643 is a wasteful number, since it uses less digits than its factorization.

172913345643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525314.

The product of its digits is 1632960, while the sum is 48.

The spelling of 172913345643 in words is "one hundred seventy-two billion, nine hundred thirteen million, three hundred forty-five thousand, six hundred forty-three".