21283783718399 has 8 divisors (see below), whose sum is σ = 21607664860320. Its totient is φ = 20962241068896.

The previous prime is 21283783718381. The next prime is 21283783718411. The reversal of 21283783718399 is 99381738738212.

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 21283783718399 - 2⁸ = 21283783718143 is a prime.

It is a super-2 number, since 2×21283783718399² (a number of 27 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 (21283783718359) 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, 584604764 + ... + 584641169.

It is an arithmetic number, because the mean of its divisors is an integer number (2700958107540).

Almost surely, 2^{21283783718399} is an apocalyptic number.

21283783718399 is a deficient number, since it is larger than the sum of its proper divisors (323881141921).

21283783718399 is a wasteful number, since it uses less digits than its factorization.

21283783718399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169246209.

The product of its digits is 219469824, while the sum is 71.

The spelling of 21283783718399 in words is "twenty-one trillion, two hundred eighty-three billion, seven hundred eighty-three million, seven hundred eighteen thousand, three hundred ninety-nine".