172289193677 has 2 divisors, whose sum is σ = 172289193678. Its totient is φ = 172289193676.

The previous prime is 172289193467. The next prime is 172289193679. The reversal of 172289193677 is 776391982271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140194829476 + 32094364201 = 374426^2 + 179149^2 .

It is a cyclic number.

It is not a de Polignac number, because 172289193677 - 2¹⁰ = 172289192653 is a prime.

Together with 172289193679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172289193679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86144596838 + 86144596839.

It is an arithmetic number, because the mean of its divisors is an integer number (86144596839).

Almost surely, 2^172289193677 is an apocalyptic number.

It is an amenable number.

172289193677 is a deficient number, since it is larger than the sum of its proper divisors (1).

172289193677 is an equidigital number, since it uses as much as digits as its factorization.

172289193677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16003008, while the sum is 62.

The spelling of 172289193677 in words is "one hundred seventy-two billion, two hundred eighty-nine million, one hundred ninety-three thousand, six hundred seventy-seven".