21106307614 has 16 divisors (see below), whose sum is σ = 36277718400. Its totient is φ = 9021691224.

The previous prime is 21106307557. The next prime is 21106307647. The reversal of 21106307614 is 41670360112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983604 + ... + 1994215.

It is an arithmetic number, because the mean of its divisors is an integer number (2267357400).

Almost surely, 2^21106307614 is an apocalyptic number.

21106307614 is a deficient number, since it is larger than the sum of its proper divisors (15171410786).

21106307614 is a wasteful number, since it uses less digits than its factorization.

21106307614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978207.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 21106307614 its reverse (41670360112), we get a palindrome (62776667726).

The spelling of 21106307614 in words is "twenty-one billion, one hundred six million, three hundred seven thousand, six hundred fourteen".