172450346609 has 2 divisors, whose sum is σ = 172450346610. Its totient is φ = 172450346608.

The previous prime is 172450346603. The next prime is 172450346669. The reversal of 172450346609 is 906643054271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99966630625 + 72483715984 = 316175^2 + 269228^2 .

It is a cyclic number.

It is not a de Polignac number, because 172450346609 - 2¹² = 172450342513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (172450346603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86225173304 + 86225173305.

It is an arithmetic number, because the mean of its divisors is an integer number (86225173305).

Almost surely, 2^172450346609 is an apocalyptic number.

It is an amenable number.

172450346609 is a deficient number, since it is larger than the sum of its proper divisors (1).

172450346609 is an equidigital number, since it uses as much as digits as its factorization.

172450346609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 172450346609 in words is "one hundred seventy-two billion, four hundred fifty million, three hundred forty-six thousand, six hundred nine".