21630013123611 has 8 divisors (see below), whose sum is σ = 28843754734864. Its totient is φ = 14418140130720.

The previous prime is 21630013123591. The next prime is 21630013123613. The reversal of 21630013123611 is 11632131003612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21630013123611 - 2¹⁵ = 21630013090843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21630013123613) 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 7 ways as a sum of consecutive naturals, for example, 467127580 + ... + 467173881.

It is an arithmetic number, because the mean of its divisors is an integer number (3605469341858).

Almost surely, 2^{21630013123611} is an apocalyptic number.

21630013123611 is a deficient number, since it is larger than the sum of its proper divisors (7213741611253).

21630013123611 is an equidigital number, since it uses as much as digits as its factorization.

21630013123611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934309181.

The product of its (nonzero) digits is 3888, while the sum is 30.

The spelling of 21630013123611 in words is "twenty-one trillion, six hundred thirty billion, thirteen million, one hundred twenty-three thousand, six hundred eleven".