21873015716 has 12 divisors (see below), whose sum is σ = 38296028400. Its totient is φ = 10931293320.

The previous prime is 21873015701. The next prime is 21873015751. The reversal of 21873015716 is 61751037812.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294190 + ... + 1310981.

It is an arithmetic number, because the mean of its divisors is an integer number (3191335700).

Almost surely, 2^21873015716 is an apocalyptic number.

It is an amenable number.

21873015716 is a deficient number, since it is larger than the sum of its proper divisors (16423012684).

21873015716 is a wasteful number, since it uses less digits than its factorization.

21873015716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607274 (or 2607272 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 21873015716 in words is "twenty-one billion, eight hundred seventy-three million, fifteen thousand, seven hundred sixteen".