21669027008316 has 384 divisors, whose sum is σ = 56863688491008. Its totient is φ = 6391332864000.

The previous prime is 21669027008263. The next prime is 21669027008399. The reversal of 21669027008316 is 61380072096612.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12590950336 + ... + 12590952056.

It is an arithmetic number, because the mean of its divisors is an integer number (148082522112).

Almost surely, 2^{21669027008316} 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 21669027008316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28431844245504).

21669027008316 is an abundant number, since it is smaller than the sum of its proper divisors (35194661482692).

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

21669027008316 is a wasteful number, since it uses less digits than its factorization.

21669027008316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 21669027008316 in words is "twenty-one trillion, six hundred sixty-nine billion, twenty-seven million, eight thousand, three hundred sixteen".