21241660814 has 16 divisors (see below), whose sum is σ = 34769046960. Its totient is φ = 9652532160.

The previous prime is 21241660813. The next prime is 21241660829. The reversal of 21241660814 is 41806614212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241660813) 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, 58919 + ... + 214370.

It is an arithmetic number, because the mean of its divisors is an integer number (2173065435).

Almost surely, 2^21241660814 is an apocalyptic number.

21241660814 is a deficient number, since it is larger than the sum of its proper divisors (13527386146).

21241660814 is a wasteful number, since it uses less digits than its factorization.

21241660814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276835.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 21241660814 in words is "twenty-one billion, two hundred forty-one million, six hundred sixty thousand, eight hundred fourteen".