172822141322491 has 2 divisors, whose sum is σ = 172822141322492. Its totient is φ = 172822141322490.

The previous prime is 172822141322459. The next prime is 172822141322497. The reversal of 172822141322491 is 194223141228271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172822141322491 - 2⁵ = 172822141322459 is a prime.

It is not a weakly prime, because it can be changed into another prime (172822141322497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86411070661245 + 86411070661246.

It is an arithmetic number, because the mean of its divisors is an integer number (86411070661246).

Almost surely, 2^{172822141322491} is an apocalyptic number.

172822141322491 is a deficient number, since it is larger than the sum of its proper divisors (1).

172822141322491 is an equidigital number, since it uses as much as digits as its factorization.

172822141322491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 49.

The spelling of 172822141322491 in words is "one hundred seventy-two trillion, eight hundred twenty-two billion, one hundred forty-one million, three hundred twenty-two thousand, four hundred ninety-one".