172129605293 has 2 divisors, whose sum is σ = 172129605294. Its totient is φ = 172129605292.

The previous prime is 172129605247. The next prime is 172129605443. The reversal of 172129605293 is 392506921271.

172129605293 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., 87377586409 + 84752018884 = 295597^2 + 291122^2 .

It is a cyclic number.

It is not a de Polignac number, because 172129605293 - 2⁶ = 172129605229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172129605223) 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, 86064802646 + 86064802647.

It is an arithmetic number, because the mean of its divisors is an integer number (86064802647).

Almost surely, 2^172129605293 is an apocalyptic number.

It is an amenable number.

172129605293 is a deficient number, since it is larger than the sum of its proper divisors (1).

172129605293 is an equidigital number, since it uses as much as digits as its factorization.

172129605293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 172129605293 in words is "one hundred seventy-two billion, one hundred twenty-nine million, six hundred five thousand, two hundred ninety-three".