172439467723 has 2 divisors, whose sum is σ = 172439467724. Its totient is φ = 172439467722.

The previous prime is 172439467699. The next prime is 172439467769. The reversal of 172439467723 is 327764934271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172439467723 - 2¹³ = 172439459531 is a prime.

It is not a weakly prime, because it can be changed into another prime (172439467423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86219733861 + 86219733862.

It is an arithmetic number, because the mean of its divisors is an integer number (86219733862).

Almost surely, 2^172439467723 is an apocalyptic number.

172439467723 is a deficient number, since it is larger than the sum of its proper divisors (1).

172439467723 is an equidigital number, since it uses as much as digits as its factorization.

172439467723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 55.

The spelling of 172439467723 in words is "one hundred seventy-two billion, four hundred thirty-nine million, four hundred sixty-seven thousand, seven hundred twenty-three".