21116243463 has 8 divisors (see below), whose sum is σ = 32177132928. Its totient is φ = 12066424824.

The previous prime is 21116243453. The next prime is 21116243527. The reversal of 21116243463 is 36434261112.

It is a happy number.

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

It is not a de Polignac number, because 21116243463 - 2⁵ = 21116243431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116243453) 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, 502767681 + ... + 502767722.

It is an arithmetic number, because the mean of its divisors is an integer number (4022141616).

Almost surely, 2^21116243463 is an apocalyptic number.

21116243463 is a deficient number, since it is larger than the sum of its proper divisors (11060889465).

21116243463 is a wasteful number, since it uses less digits than its factorization.

21116243463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005535413.

The product of its digits is 20736, while the sum is 33.

The spelling of 21116243463 in words is "twenty-one billion, one hundred sixteen million, two hundred forty-three thousand, four hundred sixty-three".