172823856352 has 24 divisors (see below), whose sum is σ = 388853677296. Its totient is φ = 74067366912.

The previous prime is 172823856347. The next prime is 172823856389. The reversal of 172823856352 is 253658328271.

It is a self number, because there is not a number n which added to its sum of digits gives 172823856352.

It is a congruent number.

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, 385767313 + ... + 385767760.

It is an arithmetic number, because the mean of its divisors is an integer number (16202236554).

Almost surely, 2^172823856352 is an apocalyptic number.

It is an amenable number.

172823856352 is an abundant number, since it is smaller than the sum of its proper divisors (216029820944).

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

172823856352 is an equidigital number, since it uses as much as digits as its factorization.

172823856352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771535090 (or 771535082 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The spelling of 172823856352 in words is "one hundred seventy-two billion, eight hundred twenty-three million, eight hundred fifty-six thousand, three hundred fifty-two".