172716555163 has 2 divisors, whose sum is σ = 172716555164. Its totient is φ = 172716555162.

The previous prime is 172716555107. The next prime is 172716555173. The reversal of 172716555163 is 361555617271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172716555163 is a prime.

It is not a weakly prime, because it can be changed into another prime (172716555173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86358277581 + 86358277582.

It is an arithmetic number, because the mean of its divisors is an integer number (86358277582).

Almost surely, 2^172716555163 is an apocalyptic number.

172716555163 is a deficient number, since it is larger than the sum of its proper divisors (1).

172716555163 is an equidigital number, since it uses as much as digits as its factorization.

172716555163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1323000, while the sum is 49.

The spelling of 172716555163 in words is "one hundred seventy-two billion, seven hundred sixteen million, five hundred fifty-five thousand, one hundred sixty-three".