20782600826 has 16 divisors (see below), whose sum is σ = 34031785704. Its totient is φ = 9460571904.

The previous prime is 20782600799. The next prime is 20782600829. The reversal of 20782600826 is 62800628702.

It can be written as a sum of positive squares in 4 ways, for example, as 20213730625 + 568870201 = 142175^2 + 23851^2 .

It is not an unprimeable number, because it can be changed into a prime (20782600829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5472971 + ... + 5476766.

Almost surely, 2^20782600826 is an apocalyptic number.

20782600826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20782600826 is a deficient number, since it is larger than the sum of its proper divisors (13249184878).

20782600826 is a wasteful number, since it uses less digits than its factorization.

20782600826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10949825.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 20782600826 in words is "twenty billion, seven hundred eighty-two million, six hundred thousand, eight hundred twenty-six".