172813648452 has 12 divisors (see below), whose sum is σ = 403231846416. Its totient is φ = 57604549480.

The previous prime is 172813648433. The next prime is 172813648457. The reversal of 172813648452 is 254846318271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 172813648395 and 172813648404.

It is not an unprimeable number, because it can be changed into a prime (172813648457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7200568674 + ... + 7200568697.

It is an arithmetic number, because the mean of its divisors is an integer number (33602653868).

Almost surely, 2^172813648452 is an apocalyptic number.

172813648452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172813648452 is an abundant number, since it is smaller than the sum of its proper divisors (230418197964).

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

172813648452 is a wasteful number, since it uses less digits than its factorization.

172813648452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14401137378 (or 14401137376 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The spelling of 172813648452 in words is "one hundred seventy-two billion, eight hundred thirteen million, six hundred forty-eight thousand, four hundred fifty-two".