21026976000 has 144 divisors (see below), whose sum is σ = 69841419648. Its totient is φ = 5607168000.

The previous prime is 21026975999. The next prime is 21026976011. The reversal of 21026976000 is 67962012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13516 + ... + 205515.

Almost surely, 2^21026976000 is an apocalyptic number.

21026976000 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 21026976000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34920709824).

21026976000 is an abundant number, since it is smaller than the sum of its proper divisors (48814443648).

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

21026976000 is an equidigital number, since it uses as much as digits as its factorization.

21026976000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219065 (or 219041 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 21026976000 in words is "twenty-one billion, twenty-six million, nine hundred seventy-six thousand".