21630304579206 has 16 divisors (see below), whose sum is σ = 43385279505984. Its totient is φ = 7189323135144.

The previous prime is 21630304579201. The next prime is 21630304579207. The reversal of 21630304579206 is 60297540303612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21630304579201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5194595560 + ... + 5194599723.

It is an arithmetic number, because the mean of its divisors is an integer number (2711579969124).

Almost surely, 2^{21630304579206} is an apocalyptic number.

21630304579206 is an abundant number, since it is smaller than the sum of its proper divisors (21754974926778).

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

21630304579206 is a wasteful number, since it uses less digits than its factorization.

21630304579206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10389195635.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 21630304579206 in words is "twenty-one trillion, six hundred thirty billion, three hundred four million, five hundred seventy-nine thousand, two hundred six".