21488049473 has 8 divisors (see below), whose sum is σ = 23442825600. Its totient is φ = 19533492880.

The previous prime is 21488049461. The next prime is 21488049503. The reversal of 21488049473 is 37494088412.

It is a happy number.

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

It is not a de Polignac number, because 21488049473 - 2¹⁴ = 21488033089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21488049073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202136 + ... + 289542.

It is an arithmetic number, because the mean of its divisors is an integer number (2930353200).

Almost surely, 2^21488049473 is an apocalyptic number.

It is an amenable number.

21488049473 is a deficient number, since it is larger than the sum of its proper divisors (1954776127).

21488049473 is a wasteful number, since it uses less digits than its factorization.

21488049473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109767.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 21488049473 in words is "twenty-one billion, four hundred eighty-eight million, forty-nine thousand, four hundred seventy-three".