4459247988021 has 48 divisors (see below), whose sum is σ = 6743577764352. Its totient is φ = 2836016064000.

The previous prime is 4459247987933. The next prime is 4459247988031. The reversal of 4459247988021 is 1208897429544.

4459247988021 is a `hidden beast` number, since 445 + 9 + 2 + 4 + 7 + 98 + 80 + 21 = 666.

It is not a de Polignac number, because 4459247988021 - 2²² = 4459243793717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4459247988021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4459247988031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38904846 + ... + 39019296.

It is an arithmetic number, because the mean of its divisors is an integer number (140491203424).

Almost surely, 2^{4459247988021} is an apocalyptic number.

It is an amenable number.

4459247988021 is a deficient number, since it is larger than the sum of its proper divisors (2284329776331).

4459247988021 is a wasteful number, since it uses less digits than its factorization.

4459247988021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116474 (or 116471 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 4459247988021 in words is "four trillion, four hundred fifty-nine billion, two hundred forty-seven million, nine hundred eighty-eight thousand, twenty-one".