172893109969 has 2 divisors, whose sum is σ = 172893109970. Its totient is φ = 172893109968.

The previous prime is 172893109931. The next prime is 172893109979. The reversal of 172893109969 is 969901398271.

172893109969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150792422400 + 22100687569 = 388320^2 + 148663^2 .

It is a cyclic number.

It is not a de Polignac number, because 172893109969 - 2¹⁹ = 172892585681 is a prime.

It is a super-2 number, since 2×172893109969² (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 172893109969.

It is not a weakly prime, because it can be changed into another prime (172893109919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86446554984 + 86446554985.

It is an arithmetic number, because the mean of its divisors is an integer number (86446554985).

Almost surely, 2^172893109969 is an apocalyptic number.

It is an amenable number.

172893109969 is a deficient number, since it is larger than the sum of its proper divisors (1).

172893109969 is an equidigital number, since it uses as much as digits as its factorization.

172893109969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 172893109969 in words is "one hundred seventy-two billion, eight hundred ninety-three million, one hundred nine thousand, nine hundred sixty-nine".