172129667419 has 2 divisors, whose sum is σ = 172129667420. Its totient is φ = 172129667418.

The previous prime is 172129667399. The next prime is 172129667443. The reversal of 172129667419 is 914766921271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172129667419 - 2⁵ = 172129667387 is a prime.

It is a super-2 number, since 2×172129667419² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172129667419.

It is not a weakly prime, because it can be changed into another prime (172129667459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86064833709 + 86064833710.

It is an arithmetic number, because the mean of its divisors is an integer number (86064833710).

Almost surely, 2^172129667419 is an apocalyptic number.

172129667419 is a deficient number, since it is larger than the sum of its proper divisors (1).

172129667419 is an equidigital number, since it uses as much as digits as its factorization.

172129667419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 55.

The spelling of 172129667419 in words is "one hundred seventy-two billion, one hundred twenty-nine million, six hundred sixty-seven thousand, four hundred nineteen".