21043653119 has 8 divisors (see below), whose sum is σ = 21804597360. Its totient is φ = 20285062336.

The previous prime is 21043653109. The next prime is 21043653131. The reversal of 21043653119 is 91135634012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21043653119 - 2¹² = 21043649023 is a prime.

It is a super-2 number, since 2×21043653119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21043653109) 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, 570149 + ... + 605934.

It is an arithmetic number, because the mean of its divisors is an integer number (2725574670).

Almost surely, 2^21043653119 is an apocalyptic number.

21043653119 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21043653119 is a deficient number, since it is larger than the sum of its proper divisors (760944241).

21043653119 is a wasteful number, since it uses less digits than its factorization.

21043653119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176729.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 21043653119 in words is "twenty-one billion, forty-three million, six hundred fifty-three thousand, one hundred nineteen".