172457069097647 has 2 divisors, whose sum is σ = 172457069097648. Its totient is φ = 172457069097646.

The previous prime is 172457069097601. The next prime is 172457069097721. The reversal of 172457069097647 is 746790960754271.

It is an a-pointer prime, because the next prime (172457069097721) can be obtained adding 172457069097647 to its sum of digits (74).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172457069097647 - 2⁶ = 172457069097583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172457069097947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86228534548823 + 86228534548824.

It is an arithmetic number, because the mean of its divisors is an integer number (86228534548824).

Almost surely, 2^{172457069097647} is an apocalyptic number.

172457069097647 is a deficient number, since it is larger than the sum of its proper divisors (1).

172457069097647 is an equidigital number, since it uses as much as digits as its factorization.

172457069097647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120210560, while the sum is 74.

The spelling of 172457069097647 in words is "one hundred seventy-two trillion, four hundred fifty-seven billion, sixty-nine million, ninety-seven thousand, six hundred forty-seven".