21874726696 has 32 divisors (see below), whose sum is σ = 41247813600. Its totient is φ = 10875435840.

The previous prime is 21874726663. The next prime is 21874726739. The reversal of 21874726696 is 69662747812.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21874726696.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478391 + ... + 1493113.

It is an arithmetic number, because the mean of its divisors is an integer number (1288994175).

Almost surely, 2^21874726696 is an apocalyptic number.

It is an amenable number.

21874726696 is a deficient number, since it is larger than the sum of its proper divisors (19373086904).

21874726696 is a wasteful number, since it uses less digits than its factorization.

21874726696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15769 (or 15765 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The spelling of 21874726696 in words is "twenty-one billion, eight hundred seventy-four million, seven hundred twenty-six thousand, six hundred ninety-six".