21789458375068 has 12 divisors (see below), whose sum is σ = 38131795500232. Its totient is φ = 10894659660720.

The previous prime is 21789458375063. The next prime is 21789458375177. The reversal of 21789458375068 is 86057385498712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21789458375063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16673355 + ... + 17932642.

It is a 1-persistent number, because it is pandigital, but 2⋅21789458375068 = 43578916750136 is not.

Almost surely, 2^{21789458375068} is an apocalyptic number.

It is an amenable number.

21789458375068 is a deficient number, since it is larger than the sum of its proper divisors (16342337125164).

21789458375068 is a wasteful number, since it uses less digits than its factorization.

21789458375068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34763412 (or 34763410 counting only the distinct ones).

The product of its (nonzero) digits is 812851200, while the sum is 73.

The spelling of 21789458375068 in words is "twenty-one trillion, seven hundred eighty-nine billion, four hundred fifty-eight million, three hundred seventy-five thousand, sixty-eight".