20937421960 has 256 divisors, whose sum is σ = 59156697600. Its totient is φ = 6493519872.

The previous prime is 20937421951. The next prime is 20937421993. The reversal of 20937421960 is 6912473902.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44833647 + ... + 44834113.

It is an arithmetic number, because the mean of its divisors is an integer number (231080850).

Almost surely, 2^20937421960 is an apocalyptic number.

20937421960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20937421960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29578348800).

20937421960 is an abundant number, since it is smaller than the sum of its proper divisors (38219275640).

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

20937421960 is a wasteful number, since it uses less digits than its factorization.

20937421960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 20937421960 in words is "twenty billion, nine hundred thirty-seven million, four hundred twenty-one thousand, nine hundred sixty".