2126504828173 has 4 divisors (see below), whose sum is σ = 2319823448928. Its totient is φ = 1933186207420.

The previous prime is 2126504828093. The next prime is 2126504828177. The reversal of 2126504828173 is 3718284056212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2126504828173 - 2¹³ = 2126504819981 is a prime.

It is a Smith number, since the sum of its digits (49) 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 (2126504828177) 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, 96659310361 + ... + 96659310382.

It is an arithmetic number, because the mean of its divisors is an integer number (579955862232).

Almost surely, 2^{2126504828173} is an apocalyptic number.

It is an amenable number.

2126504828173 is a deficient number, since it is larger than the sum of its proper divisors (193318620755).

2126504828173 is a wasteful number, since it uses less digits than its factorization.

2126504828173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193318620754.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 2126504828173 in words is "two trillion, one hundred twenty-six billion, five hundred four million, eight hundred twenty-eight thousand, one hundred seventy-three".