172893109013 has 2 divisors, whose sum is σ = 172893109014. Its totient is φ = 172893109012.

The previous prime is 172893108959. The next prime is 172893109069. The reversal of 172893109013 is 310901398271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171733161649 + 1159947364 = 414407^2 + 34058^2 .

It is an emirp because it is prime and its reverse (310901398271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172893109013 - 2¹⁸ = 172892846869 is a prime.

It is a super-2 number, since 2×172893109013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172893109093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86446554506 + 86446554507.

It is an arithmetic number, because the mean of its divisors is an integer number (86446554507).

Almost surely, 2^172893109013 is an apocalyptic number.

It is an amenable number.

172893109013 is a deficient number, since it is larger than the sum of its proper divisors (1).

172893109013 is an equidigital number, since it uses as much as digits as its factorization.

172893109013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 172893109013 in words is "one hundred seventy-two billion, eight hundred ninety-three million, one hundred nine thousand, thirteen".