326572172149 has 2 divisors, whose sum is σ = 326572172150. Its totient is φ = 326572172148.

The previous prime is 326572172033. The next prime is 326572172153. The reversal of 326572172149 is 941271275623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258121915249 + 68450256900 = 508057^2 + 261630^2 .

It is a cyclic number.

It is not a de Polignac number, because 326572172149 - 2⁷ = 326572172021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326572170149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163286086074 + 163286086075.

It is an arithmetic number, because the mean of its divisors is an integer number (163286086075).

Almost surely, 2^326572172149 is an apocalyptic number.

It is an amenable number.

326572172149 is a deficient number, since it is larger than the sum of its proper divisors (1).

326572172149 is an equidigital number, since it uses as much as digits as its factorization.

326572172149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The spelling of 326572172149 in words is "three hundred twenty-six billion, five hundred seventy-two million, one hundred seventy-two thousand, one hundred forty-nine".