20960841940 has 12 divisors (see below), whose sum is σ = 44017768116. Its totient is φ = 8384336768.

The previous prime is 20960841911. The next prime is 20960841947. The reversal of 20960841940 is 4914806902.

It can be written as a sum of positive squares in 2 ways, for example, as 4155349444 + 16805492496 = 64462^2 + 129636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20960841947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524021029 + ... + 524021068.

It is an arithmetic number, because the mean of its divisors is an integer number (3668147343).

Almost surely, 2^20960841940 is an apocalyptic number.

20960841940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20960841940 is an abundant number, since it is smaller than the sum of its proper divisors (23056926176).

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

20960841940 is a wasteful number, since it uses less digits than its factorization.

20960841940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048042106 (or 1048042104 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 20960841940 in words is "twenty billion, nine hundred sixty million, eight hundred forty-one thousand, nine hundred forty".