21703316345 has 8 divisors (see below), whose sum is σ = 26152951680. Its totient is φ = 17290005040.

The previous prime is 21703316311. The next prime is 21703316347. The reversal of 21703316345 is 54361330712.

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

It is not a de Polignac number, because 21703316345 - 2¹⁰ = 21703315321 is a prime.

It is a super-2 number, since 2×21703316345² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21703316347) 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, 9079691 + ... + 9082080.

It is an arithmetic number, because the mean of its divisors is an integer number (3269118960).

Almost surely, 2^21703316345 is an apocalyptic number.

It is an amenable number.

21703316345 is a deficient number, since it is larger than the sum of its proper divisors (4449635335).

21703316345 is a wasteful number, since it uses less digits than its factorization.

21703316345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18162015.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 21703316345 in words is "twenty-one billion, seven hundred three million, three hundred sixteen thousand, three hundred forty-five".