21700760474 has 8 divisors (see below), whose sum is σ = 34465913748. Its totient is φ = 10212122560.

The previous prime is 21700760401. The next prime is 21700760519. The reversal of 21700760474 is 47406700712.

It can be written as a sum of positive squares in 2 ways, for example, as 21299359249 + 401401225 = 145943^2 + 20035^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 319128797 + ... + 319128864.

Almost surely, 2^21700760474 is an apocalyptic number.

21700760474 is a deficient number, since it is larger than the sum of its proper divisors (12765153274).

21700760474 is a wasteful number, since it uses less digits than its factorization.

21700760474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638257680.

The product of its (nonzero) digits is 65856, while the sum is 38.

The spelling of 21700760474 in words is "twenty-one billion, seven hundred million, seven hundred sixty thousand, four hundred seventy-four".