819142661324 has 18 divisors (see below), whose sum is σ = 1552251109500. Its totient is φ = 378065843376.

The previous prime is 819142661317. The next prime is 819142661333. The reversal of 819142661324 is 423166241918.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605874074 + ... + 605875425.

It is an arithmetic number, because the mean of its divisors is an integer number (86236172750).

Almost surely, 2^819142661324 is an apocalyptic number.

It is an amenable number.

819142661324 is a deficient number, since it is larger than the sum of its proper divisors (733108448176).

819142661324 is a wasteful number, since it uses less digits than its factorization.

819142661324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211749529 (or 1211749514 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The spelling of 819142661324 in words is "eight hundred nineteen billion, one hundred forty-two million, six hundred sixty-one thousand, three hundred twenty-four".