20975126766 has 32 divisors (see below), whose sum is σ = 47000780928. Its totient is φ = 6184311840.

The previous prime is 20975126747. The next prime is 20975126773. The reversal of 20975126766 is 66762157902.

20975126766 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4292220 + ... + 4297103.

It is an arithmetic number, because the mean of its divisors is an integer number (1468774404).

Almost surely, 2^20975126766 is an apocalyptic number.

20975126766 is an abundant number, since it is smaller than the sum of its proper divisors (26025654162).

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

20975126766 is a wasteful number, since it uses less digits than its factorization.

20975126766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589376.

The product of its (nonzero) digits is 1905120, while the sum is 51.

It can be divided in two parts, 20975 and 126766, that added together give a palindrome (147741).

The spelling of 20975126766 in words is "twenty billion, nine hundred seventy-five million, one hundred twenty-six thousand, seven hundred sixty-six".