21339237254880 has 384 divisors, whose sum is σ = 68461807454208. Its totient is φ = 5586023596032.

The previous prime is 21339237254833. The next prime is 21339237254891. The reversal of 21339237254880 is 8845273293312.

It is a self number, because there is not a number n which added to its sum of digits gives 21339237254880.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7882982487 + ... + 7882985193.

It is an arithmetic number, because the mean of its divisors is an integer number (178285956912).

Almost surely, 2^{21339237254880} is an apocalyptic number.

21339237254880 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 21339237254880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34230903727104).

21339237254880 is an abundant number, since it is smaller than the sum of its proper divisors (47122570199328).

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

21339237254880 is a wasteful number, since it uses less digits than its factorization.

21339237254880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3770 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 21339237254880 in words is "twenty-one trillion, three hundred thirty-nine billion, two hundred thirty-seven million, two hundred fifty-four thousand, eight hundred eighty".