172162007639 has 4 divisors (see below), whose sum is σ = 174586824720. Its totient is φ = 169737190560.

The previous prime is 172162007603. The next prime is 172162007659. The reversal of 172162007639 is 936700261271.

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-172162007639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172162007639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172162007659) 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, 1212408434 + ... + 1212408575.

It is an arithmetic number, because the mean of its divisors is an integer number (43646706180).

Almost surely, 2^172162007639 is an apocalyptic number.

172162007639 is a deficient number, since it is larger than the sum of its proper divisors (2424817081).

172162007639 is an equidigital number, since it uses as much as digits as its factorization.

172162007639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424817080.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 172162007639 in words is "one hundred seventy-two billion, one hundred sixty-two million, seven thousand, six hundred thirty-nine".