172122239519 has 2 divisors, whose sum is σ = 172122239520. Its totient is φ = 172122239518.

The previous prime is 172122239507. The next prime is 172122239537. The reversal of 172122239519 is 915932221271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172122239519 - 2²⁴ = 172105462303 is a prime.

It is a super-2 number, since 2×172122239519² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172122239519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172122239539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86061119759 + 86061119760.

It is an arithmetic number, because the mean of its divisors is an integer number (86061119760).

Almost surely, 2^172122239519 is an apocalyptic number.

172122239519 is a deficient number, since it is larger than the sum of its proper divisors (1).

172122239519 is an equidigital number, since it uses as much as digits as its factorization.

172122239519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The spelling of 172122239519 in words is "one hundred seventy-two billion, one hundred twenty-two million, two hundred thirty-nine thousand, five hundred nineteen".