21703837353 has 32 divisors (see below), whose sum is σ = 31774619520. Its totient is φ = 13068533760.

The previous prime is 21703837303. The next prime is 21703837361. The reversal of 21703837353 is 35373830712.

It is not a de Polignac number, because 21703837353 - 2⁸ = 21703837097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21703837303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3465601 + ... + 3471857.

It is an arithmetic number, because the mean of its divisors is an integer number (992956860).

Almost surely, 2^21703837353 is an apocalyptic number.

It is an amenable number.

21703837353 is a deficient number, since it is larger than the sum of its proper divisors (10070782167).

21703837353 is a wasteful number, since it uses less digits than its factorization.

21703837353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 21703837353 in words is "twenty-one billion, seven hundred three million, eight hundred thirty-seven thousand, three hundred fifty-three".