20943405948 has 24 divisors (see below), whose sum is σ = 50553049680. Its totient is φ = 6740406400.

The previous prime is 20943405947. The next prime is 20943405949. The reversal of 20943405948 is 84950434902.

It is an interprime number because it is at equal distance from previous prime (20943405947) and next prime (20943405949).

It is a junction number, because it is equal to n+sod(n) for n = 20943405897 and 20943405906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20943405947) 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, 30090753 + ... + 30091448.

It is an arithmetic number, because the mean of its divisors is an integer number (2106377070).

Almost surely, 2^20943405948 is an apocalyptic number.

It is an amenable number.

20943405948 is an abundant number, since it is smaller than the sum of its proper divisors (29609643732).

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

20943405948 is a wasteful number, since it uses less digits than its factorization.

20943405948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60182237 (or 60182235 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 20943405948 in words is "twenty billion, nine hundred forty-three million, four hundred five thousand, nine hundred forty-eight".