2126318455768 has 128 divisors (see below), whose sum is σ = 4681255219200. Its totient is φ = 896656780800.

The previous prime is 2126318455721. The next prime is 2126318455813. The reversal of 2126318455768 is 8675548136212.

It is a super-2 number, since 2×2126318455768² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 17888773 + ... + 18007243.

It is an arithmetic number, because the mean of its divisors is an integer number (36572306400).

Almost surely, 2^{2126318455768} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2126318455768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340627609600).

2126318455768 is an abundant number, since it is smaller than the sum of its proper divisors (2554936763432).

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

2126318455768 is a wasteful number, since it uses less digits than its factorization.

2126318455768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118833 (or 118829 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 2126318455768 in words is "two trillion, one hundred twenty-six billion, three hundred eighteen million, four hundred fifty-five thousand, seven hundred sixty-eight".