172531166711 has 2 divisors, whose sum is σ = 172531166712. Its totient is φ = 172531166710.

The previous prime is 172531166683. The next prime is 172531166761. The reversal of 172531166711 is 117661135271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172531166711 - 2¹⁴ = 172531150327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172531166761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86265583355 + 86265583356.

It is an arithmetic number, because the mean of its divisors is an integer number (86265583356).

Almost surely, 2^172531166711 is an apocalyptic number.

172531166711 is a deficient number, since it is larger than the sum of its proper divisors (1).

172531166711 is an equidigital number, since it uses as much as digits as its factorization.

172531166711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 41.

The spelling of 172531166711 in words is "one hundred seventy-two billion, five hundred thirty-one million, one hundred sixty-six thousand, seven hundred eleven".