21361463359 has 8 divisors (see below), whose sum is σ = 21738378240. Its totient is φ = 20985043800.

The previous prime is 21361463309. The next prime is 21361463377. The reversal of 21361463359 is 95336416312.

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 21361463359 - 2⁷ = 21361463231 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 (21361463309) by changing a digit.

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, 36277 + ... + 209854.

It is an arithmetic number, because the mean of its divisors is an integer number (2717297280).

Almost surely, 2^21361463359 is an apocalyptic number.

21361463359 is a deficient number, since it is larger than the sum of its proper divisors (376914881).

21361463359 is a wasteful number, since it uses less digits than its factorization.

21361463359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247661.

The product of its digits is 349920, while the sum is 43.

The spelling of 21361463359 in words is "twenty-one billion, three hundred sixty-one million, four hundred sixty-three thousand, three hundred fifty-nine".