172265109828 has 48 divisors (see below), whose sum is σ = 460046361600. Its totient is φ = 49146524064.

The previous prime is 172265109803. The next prime is 172265109883. The reversal of 172265109828 is 828901562271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1443928 + ... + 1558671.

It is an arithmetic number, because the mean of its divisors is an integer number (9584299200).

Almost surely, 2^172265109828 is an apocalyptic number.

It is an amenable number.

172265109828 is an abundant number, since it is smaller than the sum of its proper divisors (287781251772).

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

172265109828 is a wasteful number, since it uses less digits than its factorization.

172265109828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003296 (or 3003294 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 172265109828 in words is "one hundred seventy-two billion, two hundred sixty-five million, one hundred nine thousand, eight hundred twenty-eight".