172513291045 has 16 divisors (see below), whose sum is σ = 213141641328. Its totient is φ = 133961013760.

The previous prime is 172513291039. The next prime is 172513291091. The reversal of 172513291045 is 540192315271.

172513291045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13728574561 + 158784716484 = 117169^2 + 398478^2 .

It is not a de Polignac number, because 172513291045 - 2³ = 172513291037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172513290989 and 172513291007.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2095474 + ... + 2176243.

It is an arithmetic number, because the mean of its divisors is an integer number (13321352583).

Almost surely, 2^172513291045 is an apocalyptic number.

It is an amenable number.

172513291045 is a deficient number, since it is larger than the sum of its proper divisors (40628350283).

172513291045 is a wasteful number, since it uses less digits than its factorization.

172513291045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271960.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 172513291045 in words is "one hundred seventy-two billion, five hundred thirteen million, two hundred ninety-one thousand, forty-five".