172864629071 has 2 divisors, whose sum is σ = 172864629072. Its totient is φ = 172864629070.

The previous prime is 172864629059. The next prime is 172864629073. The reversal of 172864629071 is 170926468271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172864629071 is a prime.

It is a Sophie Germain prime.

Together with 172864629073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172864629073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86432314535 + 86432314536.

It is an arithmetic number, because the mean of its divisors is an integer number (86432314536).

Almost surely, 2^172864629071 is an apocalyptic number.

172864629071 is a deficient number, since it is larger than the sum of its proper divisors (1).

172864629071 is an equidigital number, since it uses as much as digits as its factorization.

172864629071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 172864629071 in words is "one hundred seventy-two billion, eight hundred sixty-four million, six hundred twenty-nine thousand, seventy-one".