172765476423 has 8 divisors (see below), whose sum is σ = 255948854000. Its totient is φ = 115176984264.

The previous prime is 172765476383. The next prime is 172765476427. The reversal of 172765476423 is 324674567271.

172765476423 is a `hidden beast` number, since 1 + 7 + 2 + 76 + 547 + 6 + 4 + 23 = 666.

It is not a de Polignac number, because 172765476423 - 2²⁹ = 172228605511 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 172765476423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172765476427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3199360648 + ... + 3199360701.

It is an arithmetic number, because the mean of its divisors is an integer number (31993606750).

Almost surely, 2^172765476423 is an apocalyptic number.

172765476423 is a deficient number, since it is larger than the sum of its proper divisors (83183377577).

172765476423 is an equidigital number, since it uses as much as digits as its factorization.

172765476423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398721358 (or 6398721352 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 54.

The spelling of 172765476423 in words is "one hundred seventy-two billion, seven hundred sixty-five million, four hundred seventy-six thousand, four hundred twenty-three".