21384253196 has 12 divisors (see below), whose sum is σ = 37503272352. Its totient is φ = 10669032528.

The previous prime is 21384253183. The next prime is 21384253249. The reversal of 21384253196 is 69135248312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5771435 + ... + 5775138.

It is an arithmetic number, because the mean of its divisors is an integer number (3125272696).

Almost surely, 2^21384253196 is an apocalyptic number.

It is an amenable number.

21384253196 is a deficient number, since it is larger than the sum of its proper divisors (16119019156).

21384253196 is a wasteful number, since it uses less digits than its factorization.

21384253196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11547040 (or 11547038 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The spelling of 21384253196 in words is "twenty-one billion, three hundred eighty-four million, two hundred fifty-three thousand, one hundred ninety-six".