21602360165022 has 384 divisors, whose sum is σ = 59546693606400. Its totient is φ = 5508253642752.

The previous prime is 21602360164991. The next prime is 21602360165047. The reversal of 21602360165022 is 22056106320612.

21602360165022 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 23 + 601 + 6 + 5 + 0 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8508214629 + ... + 8508217167.

It is an arithmetic number, because the mean of its divisors is an integer number (155069514600).

Almost surely, 2^{21602360165022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21602360165022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29773346803200).

21602360165022 is an abundant number, since it is smaller than the sum of its proper divisors (37944333441378).

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

21602360165022 is a wasteful number, since it uses less digits than its factorization.

21602360165022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3789 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 21602360165022 its reverse (22056106320612), we get a palindrome (43658466485634).

The spelling of 21602360165022 in words is "twenty-one trillion, six hundred two billion, three hundred sixty million, one hundred sixty-five thousand, twenty-two".