21366866114264 has 32 divisors (see below), whose sum is σ = 43705667586240. Its totient is φ = 9712053165600.

The previous prime is 21366866114249. The next prime is 21366866114281. The reversal of 21366866114264 is 46241166866312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3518327 + ... + 7423769.

It is an arithmetic number, because the mean of its divisors is an integer number (1365802112070).

Almost surely, 2^{21366866114264} is an apocalyptic number.

It is an amenable number.

21366866114264 is an abundant number, since it is smaller than the sum of its proper divisors (22338801471976).

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

21366866114264 is a wasteful number, since it uses less digits than its factorization.

21366866114264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967631 (or 3967627 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 56.

The spelling of 21366866114264 in words is "twenty-one trillion, three hundred sixty-six billion, eight hundred sixty-six million, one hundred fourteen thousand, two hundred sixty-four".