21710307460 has 12 divisors (see below), whose sum is σ = 45591645708. Its totient is φ = 8684122976.

The previous prime is 21710307391. The next prime is 21710307503. The reversal of 21710307460 is 6470301712.

It can be written as a sum of positive squares in 2 ways, for example, as 15601009216 + 6109298244 = 124904^2 + 78162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542757667 + ... + 542757706.

It is an arithmetic number, because the mean of its divisors is an integer number (3799303809).

Almost surely, 2^21710307460 is an apocalyptic number.

21710307460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21710307460 is an abundant number, since it is smaller than the sum of its proper divisors (23881338248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21710307460 is a wasteful number, since it uses less digits than its factorization.

21710307460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085515382 (or 1085515380 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 21710307460 in words is "twenty-one billion, seven hundred ten million, three hundred seven thousand, four hundred sixty".