21914678365 has 8 divisors (see below), whose sum is σ = 26360379360. Its totient is φ = 17489899152.

The previous prime is 21914678333. The next prime is 21914678371. The reversal of 21914678365 is 56387641912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21914678365 - 2⁵ = 21914678333 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5228139 + ... + 5232328.

It is an arithmetic number, because the mean of its divisors is an integer number (3295047420).

Almost surely, 2^21914678365 is an apocalyptic number.

It is an amenable number.

21914678365 is a deficient number, since it is larger than the sum of its proper divisors (4445700995).

21914678365 is a wasteful number, since it uses less digits than its factorization.

21914678365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460891.

The product of its digits is 2177280, while the sum is 52.

The spelling of 21914678365 in words is "twenty-one billion, nine hundred fourteen million, six hundred seventy-eight thousand, three hundred sixty-five".