21107324263 has 8 divisors (see below), whose sum is σ = 21168666000. Its totient is φ = 21046072320.

The previous prime is 21107324261. The next prime is 21107324269. The reversal of 21107324263 is 36242370112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21107324263 - 2¹ = 21107324261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21107324261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463488 + ... + 506986.

It is an arithmetic number, because the mean of its divisors is an integer number (2646083250).

Almost surely, 2^21107324263 is an apocalyptic number.

21107324263 is a deficient number, since it is larger than the sum of its proper divisors (61341737).

21107324263 is an equidigital number, since it uses as much as digits as its factorization.

21107324263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44897.

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 21107324263 its reverse (36242370112), we get a palindrome (57349694375).

The spelling of 21107324263 in words is "twenty-one billion, one hundred seven million, three hundred twenty-four thousand, two hundred sixty-three".