21422873899 has 8 divisors (see below), whose sum is σ = 24487354080. Its totient is φ = 18359411136.

The previous prime is 21422873897. The next prime is 21422873911. The reversal of 21422873899 is 99837822412.

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 21422873899 - 2¹ = 21422873897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21422873897) 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, 208684 + ... + 293929.

It is an arithmetic number, because the mean of its divisors is an integer number (3060919260).

Almost surely, 2^21422873899 is an apocalyptic number.

21422873899 is a deficient number, since it is larger than the sum of its proper divisors (3064480181).

21422873899 is an equidigital number, since it uses as much as digits as its factorization.

21422873899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508709.

The product of its digits is 3483648, while the sum is 55.

The spelling of 21422873899 in words is "twenty-one billion, four hundred twenty-two million, eight hundred seventy-three thousand, eight hundred ninety-nine".