21360253159 has 8 divisors (see below), whose sum is σ = 24452889120. Its totient is φ = 18277910016.

The previous prime is 21360253147. The next prime is 21360253199. The reversal of 21360253159 is 95135206312.

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 21360253159 - 2¹⁷ = 21360122087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21360253199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568754 + ... + 2577055.

It is an arithmetic number, because the mean of its divisors is an integer number (3056611140).

Almost surely, 2^21360253159 is an apocalyptic number.

21360253159 is a deficient number, since it is larger than the sum of its proper divisors (3092635961).

21360253159 is an equidigital number, since it uses as much as digits as its factorization.

21360253159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146409.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 21360253159 in words is "twenty-one billion, three hundred sixty million, two hundred fifty-three thousand, one hundred fifty-nine".