21887339520000 has 1120 divisors, whose sum is σ = 78029778103200. Its totient is φ = 5435817984000.

The previous prime is 21887339519987. The next prime is 21887339520019. The reversal of 21887339520000 is 2593378812.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28462079616 + ... + 28462080384.

It is an arithmetic number, because the mean of its divisors is an integer number (69669444735).

Almost surely, 2^{21887339520000} is an apocalyptic number.

21887339520000 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 21887339520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39014889051600).

21887339520000 is an abundant number, since it is smaller than the sum of its proper divisors (56142438583200).

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

21887339520000 is an equidigital number, since it uses as much as digits as its factorization.

21887339520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 21887339520000 in words is "twenty-one trillion, eight hundred eighty-seven billion, three hundred thirty-nine million, five hundred twenty thousand".