72002700173 has 2 divisors, whose sum is σ = 72002700174. Its totient is φ = 72002700172.

The previous prime is 72002700149. The next prime is 72002700221. The reversal of 72002700173 is 37100720027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42569180329 + 29433519844 = 206323^2 + 171562^2 .

It is a cyclic number.

It is not a de Polignac number, because 72002700173 - 2⁶ = 72002700109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72002709173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36001350086 + 36001350087.

It is an arithmetic number, because the mean of its divisors is an integer number (36001350087).

Almost surely, 2^72002700173 is an apocalyptic number.

It is an amenable number.

72002700173 is a deficient number, since it is larger than the sum of its proper divisors (1).

72002700173 is an equidigital number, since it uses as much as digits as its factorization.

72002700173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4116, while the sum is 29.

The spelling of 72002700173 in words is "seventy-two billion, two million, seven hundred thousand, one hundred seventy-three".