21163315256341 has 8 divisors (see below), whose sum is σ = 21286197417600. Its totient is φ = 21040719201600.

The previous prime is 21163315256339. The next prime is 21163315256353. The reversal of 21163315256341 is 14365251336112.

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 21163315256341 - 2¹ = 21163315256339 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 (21163315256381) 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, 71378260 + ... + 71674141.

It is an arithmetic number, because the mean of its divisors is an integer number (2660774677200).

Almost surely, 2^{21163315256341} is an apocalyptic number.

It is an amenable number.

21163315256341 is a deficient number, since it is larger than the sum of its proper divisors (122882161259).

21163315256341 is a wasteful number, since it uses less digits than its factorization.

21163315256341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143053259.

The product of its digits is 388800, while the sum is 43.

The spelling of 21163315256341 in words is "twenty-one trillion, one hundred sixty-three billion, three hundred fifteen million, two hundred fifty-six thousand, three hundred forty-one".