21116233594 has 24 divisors (see below), whose sum is σ = 32951565180. Its totient is φ = 10136810880.

The previous prime is 21116233559. The next prime is 21116233601. The reversal of 21116233594 is 49533261112.

It can be written as a sum of positive squares in 6 ways, for example, as 1210692025 + 19905541569 = 34795^2 + 141087^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1894582 + ... + 1905694.

Almost surely, 2^21116233594 is an apocalyptic number.

21116233594 is a deficient number, since it is larger than the sum of its proper divisors (11835331586).

21116233594 is a wasteful number, since it uses less digits than its factorization.

21116233594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11506 (or 11325 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The spelling of 21116233594 in words is "twenty-one billion, one hundred sixteen million, two hundred thirty-three thousand, five hundred ninety-four".