21319370116 has 48 divisors (see below), whose sum is σ = 40920707520. Its totient is φ = 9638352000.

The previous prime is 21319370113. The next prime is 21319370153. The reversal of 21319370116 is 61107391312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21319370113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9597886 + ... + 9600106.

It is an arithmetic number, because the mean of its divisors is an integer number (852514740).

Almost surely, 2^21319370116 is an apocalyptic number.

It is an amenable number.

21319370116 is a deficient number, since it is larger than the sum of its proper divisors (19601337404).

21319370116 is a wasteful number, since it uses less digits than its factorization.

21319370116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316 (or 3314 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 21319370116 in words is "twenty-one billion, three hundred nineteen million, three hundred seventy thousand, one hundred sixteen".