21793093480 has 192 divisors, whose sum is σ = 53446314240. Its totient is φ = 7992359424.

The previous prime is 21793093457. The next prime is 21793093523. The reversal of 21793093480 is 8439039712.

It is a self number, because there is not a number n which added to its sum of digits gives 21793093480.

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 47 ways as a sum of consecutive naturals, for example, 110624742 + ... + 110624938.

It is an arithmetic number, because the mean of its divisors is an integer number (278366220).

Almost surely, 2^21793093480 is an apocalyptic number.

21793093480 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 21793093480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26723157120).

21793093480 is an abundant number, since it is smaller than the sum of its proper divisors (31653220760).

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

21793093480 is a wasteful number, since it uses less digits than its factorization.

21793093480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 21793093480 in words is "twenty-one billion, seven hundred ninety-three million, ninety-three thousand, four hundred eighty".