172238895793 has 2 divisors, whose sum is σ = 172238895794. Its totient is φ = 172238895792.

The previous prime is 172238895683. The next prime is 172238895823. The reversal of 172238895793 is 397598832271.

It is a happy number.

172238895793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114394797729 + 57844098064 = 338223^2 + 240508^2 .

It is an emirp because it is prime and its reverse (397598832271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172238895793 is a prime.

It is not a weakly prime, because it can be changed into another prime (172238895293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86119447896 + 86119447897.

It is an arithmetic number, because the mean of its divisors is an integer number (86119447897).

Almost surely, 2^172238895793 is an apocalyptic number.

It is an amenable number.

172238895793 is a deficient number, since it is larger than the sum of its proper divisors (1).

172238895793 is an equidigital number, since it uses as much as digits as its factorization.

172238895793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 64.

It can be divided in two parts, 1722388 and 95793, that added together give a palindrome (1818181).

The spelling of 172238895793 in words is "one hundred seventy-two billion, two hundred thirty-eight million, eight hundred ninety-five thousand, seven hundred ninety-three".