21047584498 has 8 divisors (see below), whose sum is σ = 31585273308. Its totient is φ = 10519160064.

The previous prime is 21047584433. The next prime is 21047584507. The reversal of 21047584498 is 89448574012.

It can be written as a sum of positive squares in 2 ways, for example, as 20636184409 + 411400089 = 143653^2 + 20283^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310411 + ... + 2319502.

Almost surely, 2^21047584498 is an apocalyptic number.

21047584498 is a deficient number, since it is larger than the sum of its proper divisors (10537688810).

21047584498 is a wasteful number, since it uses less digits than its factorization.

21047584498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632188.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 21047584498 in words is "twenty-one billion, forty-seven million, five hundred eighty-four thousand, four hundred ninety-eight".