2126394875856 has 20 divisors (see below), whose sum is σ = 5493186762752. Its totient is φ = 708798291936.

The previous prime is 2126394875771. The next prime is 2126394875881. The reversal of 2126394875856 is 6585784936212.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22149946576 + ... + 22149946671.

Almost surely, 2^{2126394875856} is an apocalyptic number.

It is an amenable number.

2126394875856 is an abundant number, since it is smaller than the sum of its proper divisors (3366791886896).

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

2126394875856 is a wasteful number, since it uses less digits than its factorization.

2126394875856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44299893258 (or 44299893252 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 66.

The spelling of 2126394875856 in words is "two trillion, one hundred twenty-six billion, three hundred ninety-four million, eight hundred seventy-five thousand, eight hundred fifty-six".