2125979741173 has 4 divisors (see below), whose sum is σ = 2125990925388. Its totient is φ = 2125968556960.

The previous prime is 2125979741159. The next prime is 2125979741183. The reversal of 2125979741173 is 3711479795212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 365562925924 + 1760416815249 = 604618^2 + 1326807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125979741173 - 2⁵ = 2125979741141 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125979741113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5301958 + ... + 5688823.

It is an arithmetic number, because the mean of its divisors is an integer number (531497731347).

Almost surely, 2^{2125979741173} is an apocalyptic number.

It is an amenable number.

2125979741173 is a deficient number, since it is larger than the sum of its proper divisors (11184215).

2125979741173 is a wasteful number, since it uses less digits than its factorization.

2125979741173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184214.

The product of its digits is 6667920, while the sum is 58.

The spelling of 2125979741173 in words is "two trillion, one hundred twenty-five billion, nine hundred seventy-nine million, seven hundred forty-one thousand, one hundred seventy-three".