21284196253319 has 8 divisors (see below), whose sum is σ = 21859940158560. Its totient is φ = 20708478419616.

The previous prime is 21284196253279. The next prime is 21284196253339. The reversal of 21284196253319 is 91335269148212.

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 21284196253319 - 2⁸ = 21284196253063 is a prime.

It is a super-2 number, since 2×21284196253319² (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 (21284196253339) 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, 4857404 + ... + 8134049.

It is an arithmetic number, because the mean of its divisors is an integer number (2732492519820).

Almost surely, 2^{21284196253319} is an apocalyptic number.

21284196253319 is a deficient number, since it is larger than the sum of its proper divisors (575743905241).

21284196253319 is a wasteful number, since it uses less digits than its factorization.

21284196253319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13035769.

The product of its digits is 5598720, while the sum is 56.

The spelling of 21284196253319 in words is "twenty-one trillion, two hundred eighty-four billion, one hundred ninety-six million, two hundred fifty-three thousand, three hundred nineteen".