172423641998459 has 2 divisors, whose sum is σ = 172423641998460. Its totient is φ = 172423641998458.

The previous prime is 172423641998453. The next prime is 172423641998471. The reversal of 172423641998459 is 954899146324271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172423641998459 is a prime.

It is not a weakly prime, because it can be changed into another prime (172423641998453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86211820999229 + 86211820999230.

It is an arithmetic number, because the mean of its divisors is an integer number (86211820999230).

Almost surely, 2^{172423641998459} is an apocalyptic number.

172423641998459 is a deficient number, since it is larger than the sum of its proper divisors (1).

172423641998459 is an equidigital number, since it uses as much as digits as its factorization.

172423641998459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 940584960, while the sum is 74.

The spelling of 172423641998459 in words is "one hundred seventy-two trillion, four hundred twenty-three billion, six hundred forty-one million, nine hundred ninety-eight thousand, four hundred fifty-nine".