2172072671200 has 72 divisors (see below), whose sum is σ = 5329489406472. Its totient is φ = 864418705920.

The previous prime is 2172072671177. The next prime is 2172072671309. The reversal of 2172072671200 is 21762702712.

It is a self number, because there is not a number n which added to its sum of digits gives 2172072671200.

It is a congruent number.

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, 6733494 + ... + 7048693.

It is an arithmetic number, because the mean of its divisors is an integer number (74020686201).

Almost surely, 2^{2172072671200} is an apocalyptic number.

2172072671200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172072671200 is an abundant number, since it is smaller than the sum of its proper divisors (3157416735272).

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

2172072671200 is a wasteful number, since it uses less digits than its factorization.

2172072671200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782404 (or 13782391 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The spelling of 2172072671200 in words is "two trillion, one hundred seventy-two billion, seventy-two million, six hundred seventy-one thousand, two hundred".