21465065614 has 16 divisors (see below), whose sum is σ = 32899154400. Its totient is φ = 10499842080.

The previous prime is 21465065599. The next prime is 21465065617. The reversal of 21465065614 is 41656056412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21465065617) 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, 253122 + ... + 327109.

It is an arithmetic number, because the mean of its divisors is an integer number (2056197150).

Almost surely, 2^21465065614 is an apocalyptic number.

21465065614 is a deficient number, since it is larger than the sum of its proper divisors (11434088786).

21465065614 is a wasteful number, since it uses less digits than its factorization.

21465065614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580635.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 21465065614 in words is "twenty-one billion, four hundred sixty-five million, sixty-five thousand, six hundred fourteen".