172097592971 has 2 divisors, whose sum is σ = 172097592972. Its totient is φ = 172097592970.

The previous prime is 172097592941. The next prime is 172097592977. The reversal of 172097592971 is 179295790271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172097592971 - 2¹⁰ = 172097591947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172097592971.

It is not a weakly prime, because it can be changed into another prime (172097592977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86048796485 + 86048796486.

It is an arithmetic number, because the mean of its divisors is an integer number (86048796486).

Almost surely, 2^172097592971 is an apocalyptic number.

172097592971 is a deficient number, since it is larger than the sum of its proper divisors (1).

172097592971 is an equidigital number, since it uses as much as digits as its factorization.

172097592971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000940, while the sum is 59.

The spelling of 172097592971 in words is "one hundred seventy-two billion, ninety-seven million, five hundred ninety-two thousand, nine hundred seventy-one".