21319364048 has 40 divisors (see below), whose sum is σ = 43490668800. Its totient is φ = 10096233984.

The previous prime is 21319364041. The next prime is 21319364057. The reversal of 21319364048 is 84046391312.

It is a super-2 number, since 2×21319364048² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21319363996 and 21319364014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21319364041) 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, 2491265 + ... + 2499807.

It is an arithmetic number, because the mean of its divisors is an integer number (1087266720).

Almost surely, 2^21319364048 is an apocalyptic number.

It is an amenable number.

21319364048 is an abundant number, since it is smaller than the sum of its proper divisors (22171304752).

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

21319364048 is a wasteful number, since it uses less digits than its factorization.

21319364048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16779 (or 16773 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 21319364048 in words is "twenty-one billion, three hundred nineteen million, three hundred sixty-four thousand, forty-eight".