21150600565 has 8 divisors (see below), whose sum is σ = 25408709280. Its totient is φ = 16901821392.

The previous prime is 21150600553. The next prime is 21150600571. The reversal of 21150600565 is 56500605112.

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 21150600565 - 2¹¹ = 21150598517 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, 2327395 + ... + 2336464.

It is an arithmetic number, because the mean of its divisors is an integer number (3176088660).

Almost surely, 2^21150600565 is an apocalyptic number.

It is an amenable number.

21150600565 is a deficient number, since it is larger than the sum of its proper divisors (4258108715).

21150600565 is an equidigital number, since it uses as much as digits as its factorization.

21150600565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664771.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 21150600565 in words is "twenty-one billion, one hundred fifty million, six hundred thousand, five hundred sixty-five".