4519913939821 has 12 divisors (see below), whose sum is σ = 5534588498880. Its totient is φ = 3670306055640.

The previous prime is 4519913939797. The next prime is 4519913939857. The reversal of 4519913939821 is 1289393199154.

It is not a de Polignac number, because 4519913939821 - 2²⁵ = 4519880385389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4519913919821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2427450165 + ... + 2427452026.

It is an arithmetic number, because the mean of its divisors is an integer number (461215708240).

Almost surely, 2^{4519913939821} is an apocalyptic number.

It is an amenable number.

4519913939821 is a deficient number, since it is larger than the sum of its proper divisors (1014674559059).

4519913939821 is a wasteful number, since it uses less digits than its factorization.

4519913939821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854902224 (or 4854902217 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 64.

The spelling of 4519913939821 in words is "four trillion, five hundred nineteen billion, nine hundred thirteen million, nine hundred thirty-nine thousand, eight hundred twenty-one".