21703360418 has 16 divisors (see below), whose sum is σ = 33975702720. Its totient is φ = 10378271376.

The previous prime is 21703360397. The next prime is 21703360423. The reversal of 21703360418 is 81406330712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299396 + ... + 364752.

It is an arithmetic number, because the mean of its divisors is an integer number (2123481420).

Almost surely, 2^21703360418 is an apocalyptic number.

21703360418 is a deficient number, since it is larger than the sum of its proper divisors (12272342302).

21703360418 is a wasteful number, since it uses less digits than its factorization.

21703360418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72601.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 21703360418 in words is "twenty-one billion, seven hundred three million, three hundred sixty thousand, four hundred eighteen".