172146428448 has 24 divisors (see below), whose sum is σ = 451884374928. Its totient is φ = 57382142784.

The previous prime is 172146428423. The next prime is 172146428471. The reversal of 172146428448 is 844824641271.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 172146428448.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896595886 + ... + 896596077.

It is an arithmetic number, because the mean of its divisors is an integer number (18828515622).

Almost surely, 2^172146428448 is an apocalyptic number.

It is an amenable number.

172146428448 is an abundant number, since it is smaller than the sum of its proper divisors (279737946480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172146428448 is a wasteful number, since it uses less digits than its factorization.

172146428448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793191976 (or 1793191968 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 51.

The spelling of 172146428448 in words is "one hundred seventy-two billion, one hundred forty-six million, four hundred twenty-eight thousand, four hundred forty-eight".