21986575920000 has 480 divisors, whose sum is σ = 79376155218360. Its totient is φ = 5839680000000.

The previous prime is 21986575919999. The next prime is 21986575920013. The reversal of 21986575920000 is 2957568912.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 180659170 + ... + 180780830.

Almost surely, 2^{21986575920000} is an apocalyptic number.

21986575920000 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 21986575920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39688077609180).

21986575920000 is an abundant number, since it is smaller than the sum of its proper divisors (57389579298360).

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

21986575920000 is a wasteful number, since it uses less digits than its factorization.

21986575920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121952 (or 121922 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 21986575920000 in words is "twenty-one trillion, nine hundred eighty-six billion, five hundred seventy-five million, nine hundred twenty thousand".