2026781690688 has 112 divisors (see below), whose sum is σ = 5961497002560. Its totient is φ = 675238528512.

The previous prime is 2026781690683. The next prime is 2026781690707. The reversal of 2026781690688 is 8860961876202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026781690683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2987770 + ... + 3602822.

Almost surely, 2^{2026781690688} 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 2026781690688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2980748501280).

2026781690688 is an abundant number, since it is smaller than the sum of its proper divisors (3934715311872).

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

2026781690688 is a wasteful number, since it uses less digits than its factorization.

2026781690688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616981 (or 616965 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 2026781690688 in words is "two trillion, twenty-six billion, seven hundred eighty-one million, six hundred ninety thousand, six hundred eighty-eight".