21905602014 has 16 divisors (see below), whose sum is σ = 43812671760. Its totient is φ = 7301622720.

The previous prime is 21905602007. The next prime is 21905602027. The reversal of 21905602014 is 41020650912.

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, 275032 + ... + 345620.

It is an arithmetic number, because the mean of its divisors is an integer number (2738291985).

Almost surely, 2^21905602014 is an apocalyptic number.

21905602014 is an abundant number, since it is smaller than the sum of its proper divisors (21907069746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21905602014 is a wasteful number, since it uses less digits than its factorization.

21905602014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122315.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 21905602014 in words is "twenty-one billion, nine hundred five million, six hundred two thousand, fourteen".