21068599230 has 128 divisors (see below), whose sum is σ = 64603929600. Its totient is φ = 4786065792.

The previous prime is 21068599199. The next prime is 21068599241. The reversal of 21068599230 is 3299586012.

21068599230 is a `hidden beast` number, since 21 + 0 + 6 + 8 + 599 + 2 + 30 = 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 63 ways as a sum of consecutive naturals, for example, 273876 + ... + 342264.

It is an arithmetic number, because the mean of its divisors is an integer number (504718200).

Almost surely, 2^21068599230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21068599230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32301964800).

21068599230 is an abundant number, since it is smaller than the sum of its proper divisors (43535330370).

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

21068599230 is a wasteful number, since it uses less digits than its factorization.

21068599230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68575 (or 68569 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 21068599230 in words is "twenty-one billion, sixty-eight million, five hundred ninety-nine thousand, two hundred thirty".