2001872269172 has 24 divisors (see below), whose sum is σ = 3617120183040. Its totient is φ = 968424266880.

The previous prime is 2001872269091. The next prime is 2001872269213. The reversal of 2001872269172 is 2719622781002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323422 + ... + 2398997.

It is an arithmetic number, because the mean of its divisors is an integer number (150713340960).

Almost surely, 2^{2001872269172} is an apocalyptic number.

It is an amenable number.

2001872269172 is a deficient number, since it is larger than the sum of its proper divisors (1615247913868).

2001872269172 is a wasteful number, since it uses less digits than its factorization.

2001872269172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726791 (or 3726789 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 2001872269172 in words is "two trillion, one billion, eight hundred seventy-two million, two hundred sixty-nine thousand, one hundred seventy-two".