21416505107 has 8 divisors (see below), whose sum is σ = 21787555680. Its totient is φ = 21047382720.

The previous prime is 21416505083. The next prime is 21416505127. The reversal of 21416505107 is 70150561412.

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 21416505107 - 2¹² = 21416501011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21416505127) 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, 459632 + ... + 504077.

It is an arithmetic number, because the mean of its divisors is an integer number (2723444460).

Almost surely, 2^21416505107 is an apocalyptic number.

21416505107 is a deficient number, since it is larger than the sum of its proper divisors (371050573).

21416505107 is an equidigital number, since it uses as much as digits as its factorization.

21416505107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964093.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 21416505107 in words is "twenty-one billion, four hundred sixteen million, five hundred five thousand, one hundred seven".