21336120760416 has 192 divisors, whose sum is σ = 69849061019136. Its totient is φ = 5540122828800.

The previous prime is 21336120760369. The next prime is 21336120760421. The reversal of 21336120760416 is 61406702163312.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23361576 + ... + 24257688.

It is an arithmetic number, because the mean of its divisors is an integer number (363797192808).

Almost surely, 2^{21336120760416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21336120760416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34924530509568).

21336120760416 is an abundant number, since it is smaller than the sum of its proper divisors (48512940258720).

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

21336120760416 is a wasteful number, since it uses less digits than its factorization.

21336120760416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899365 (or 899357 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 21336120760416 in words is "twenty-one trillion, three hundred thirty-six billion, one hundred twenty million, seven hundred sixty thousand, four hundred sixteen".