21833338383974 has 16 divisors (see below), whose sum is σ = 35269926740160. Its totient is φ = 10076728890240.

The previous prime is 21833338383947. The next prime is 21833338384003. The reversal of 21833338383974 is 47938383333812.

It is a happy number.

It is a super-2 number, since 2×21833338383974² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21833338383974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6825107 + ... + 9499934.

It is an arithmetic number, because the mean of its divisors is an integer number (2204370421260).

Almost surely, 2^{21833338383974} is an apocalyptic number.

21833338383974 is a deficient number, since it is larger than the sum of its proper divisors (13436588356186).

21833338383974 is a wasteful number, since it uses less digits than its factorization.

21833338383974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16376495.

The product of its digits is 188116992, while the sum is 65.

The spelling of 21833338383974 in words is "twenty-one trillion, eight hundred thirty-three billion, three hundred thirty-eight million, three hundred eighty-three thousand, nine hundred seventy-four".