21630043323627 has 16 divisors (see below), whose sum is σ = 28873941892992. Its totient is φ = 14403091125440.

The previous prime is 21630043323613. The next prime is 21630043323649. The reversal of 21630043323627 is 72632334003612.

It is a cyclic number.

It is not a de Polignac number, because 21630043323627 - 2¹⁰ = 21630043322603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21630043323667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19702183 + ... + 20771039.

It is an arithmetic number, because the mean of its divisors is an integer number (1804621368312).

Almost surely, 2^{21630043323627} is an apocalyptic number.

21630043323627 is a deficient number, since it is larger than the sum of its proper divisors (7243898569365).

21630043323627 is a wasteful number, since it uses less digits than its factorization.

21630043323627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076778.

The product of its (nonzero) digits is 653184, while the sum is 42.

The spelling of 21630043323627 in words is "twenty-one trillion, six hundred thirty billion, forty-three million, three hundred twenty-three thousand, six hundred twenty-seven".