2123105734272 has 64 divisors (see below), whose sum is σ = 5641913066400. Its totient is φ = 707399046144.

The previous prime is 2123105734271. The next prime is 2123105734279. The reversal of 2123105734272 is 2724375013212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 2123105734272.

It is not an unprimeable number, because it can be changed into a prime (2123105734271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283723 + ... + 2080074.

Almost surely, 2^{2123105734272} is an apocalyptic number.

It is an amenable number.

2123105734272 is an abundant number, since it is smaller than the sum of its proper divisors (3518807332128).

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

2123105734272 is a wasteful number, since it uses less digits than its factorization.

2123105734272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366153 (or 2366141 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 2123105734272 in words is "two trillion, one hundred twenty-three billion, one hundred five million, seven hundred thirty-four thousand, two hundred seventy-two".