21063128913360 has 200 divisors, whose sum is σ = 73224210850560. Its totient is φ = 5611548595968.

The previous prime is 21063128913271. The next prime is 21063128913373. The reversal of 21063128913360 is 6331982136012.

21063128913360 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 3 + 1 + 289 + 1 + 3 + 360 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5359321 + ... + 8417159.

Almost surely, 2^{21063128913360} is an apocalyptic number.

21063128913360 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 21063128913360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36612105425280).

21063128913360 is an abundant number, since it is smaller than the sum of its proper divisors (52161081937200).

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

21063128913360 is a wasteful number, since it uses less digits than its factorization.

21063128913360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058927 (or 3058912 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 21063128913360 in words is "twenty-one trillion, sixty-three billion, one hundred twenty-eight million, nine hundred thirteen thousand, three hundred sixty".