21046476008 has 16 divisors (see below), whose sum is σ = 40822906500. Its totient is φ = 10160367616.

The previous prime is 21046475993. The next prime is 21046476019. The reversal of 21046476008 is 80067464012.

It can be written as a sum of positive squares in 2 ways, for example, as 20712390724 + 334085284 = 143918^2 + 18278^2 .

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, 45358553 + ... + 45359016.

Almost surely, 2^21046476008 is an apocalyptic number.

It is an amenable number.

21046476008 is a deficient number, since it is larger than the sum of its proper divisors (19776430492).

21046476008 is a wasteful number, since it uses less digits than its factorization.

21046476008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90717604 (or 90717600 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 21046476008 in words is "twenty-one billion, forty-six million, four hundred seventy-six thousand, eight".