172123280676 has 36 divisors (see below), whose sum is σ = 437970804544. Its totient is φ = 56994462000.

The previous prime is 172123280629. The next prime is 172123280687. The reversal of 172123280676 is 676082321271.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15826360 + ... + 15837231.

Almost surely, 2^172123280676 is an apocalyptic number.

It is an amenable number.

172123280676 is an abundant number, since it is smaller than the sum of its proper divisors (265847523868).

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

172123280676 is a wasteful number, since it uses less digits than its factorization.

172123280676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31663752 (or 31663747 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 172123280676 in words is "one hundred seventy-two billion, one hundred twenty-three million, two hundred eighty thousand, six hundred seventy-six".