173213041951 has 2 divisors, whose sum is σ = 173213041952. Its totient is φ = 173213041950.

The previous prime is 173213041933. The next prime is 173213041999. The reversal of 173213041951 is 159140312371.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 173213041951 - 2⁷ = 173213041823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 173213041951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173213047951) 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, 86606520975 + 86606520976.

It is an arithmetic number, because the mean of its divisors is an integer number (86606520976).

Almost surely, 2^173213041951 is an apocalyptic number.

173213041951 is a deficient number, since it is larger than the sum of its proper divisors (1).

173213041951 is an equidigital number, since it uses as much as digits as its factorization.

173213041951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 173213041951 in words is "one hundred seventy-three billion, two hundred thirteen million, forty-one thousand, nine hundred fifty-one".