21662602346063 has 16 divisors (see below), whose sum is σ = 26214005127744. Its totient is φ = 17475422215680.

The previous prime is 21662602346051. The next prime is 21662602346197. The reversal of 21662602346063 is 36064320626612.

It is a cyclic number.

It is not a de Polignac number, because 21662602346063 - 2¹⁰ = 21662602345039 is a prime.

It is a super-3 number, since 3×21662602346063³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21662602345999 and 21662602346017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21662602348063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5821481 + ... + 8787197.

It is an arithmetic number, because the mean of its divisors is an integer number (1638375320484).

Almost surely, 2^{21662602346063} is an apocalyptic number.

21662602346063 is a deficient number, since it is larger than the sum of its proper divisors (4551402781681).

21662602346063 is a wasteful number, since it uses less digits than its factorization.

21662602346063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027122.

The product of its (nonzero) digits is 2239488, while the sum is 47.

The spelling of 21662602346063 in words is "twenty-one trillion, six hundred sixty-two billion, six hundred two million, three hundred forty-six thousand, sixty-three".