2172773614172 has 12 divisors (see below), whose sum is σ = 4345547228400. Its totient is φ = 931188691776.

The previous prime is 2172773614139. The next prime is 2172773614181. The reversal of 2172773614172 is 2714163772712.

2172773614172 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2172773614172.

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, 38799528797 + ... + 38799528852.

It is an arithmetic number, because the mean of its divisors is an integer number (362128935700).

Almost surely, 2^{2172773614172} is an apocalyptic number.

It is an amenable number.

2172773614172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2172773614172 is a wasteful number, since it uses less digits than its factorization.

2172773614172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77599057660 (or 77599057658 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 50.

The spelling of 2172773614172 in words is "two trillion, one hundred seventy-two billion, seven hundred seventy-three million, six hundred fourteen thousand, one hundred seventy-two".