172969604813 has 2 divisors, whose sum is σ = 172969604814. Its totient is φ = 172969604812.

The previous prime is 172969604791. The next prime is 172969604849. The reversal of 172969604813 is 318406969271.

172969604813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107595808324 + 65373796489 = 328018^2 + 255683^2 .

It is a cyclic number.

It is not a de Polignac number, because 172969604813 - 2³⁶ = 104250128077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172969604113) 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, 86484802406 + 86484802407.

It is an arithmetic number, because the mean of its divisors is an integer number (86484802407).

Almost surely, 2^172969604813 is an apocalyptic number.

It is an amenable number.

172969604813 is a deficient number, since it is larger than the sum of its proper divisors (1).

172969604813 is an equidigital number, since it uses as much as digits as its factorization.

172969604813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 172969604813 in words is "one hundred seventy-two billion, nine hundred sixty-nine million, six hundred four thousand, eight hundred thirteen".