819879802944 has 56 divisors (see below), whose sum is σ = 2283437180640. Its totient is φ = 258909410304.

The previous prime is 819879802943. The next prime is 819879802979. The reversal of 819879802944 is 449208978918.

It is not an unprimeable number, because it can be changed into a prime (819879802943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112370229 + ... + 112377524.

It is an arithmetic number, because the mean of its divisors is an integer number (40775663940).

Almost surely, 2^819879802944 is an apocalyptic number.

It is an amenable number.

819879802944 is an abundant number, since it is smaller than the sum of its proper divisors (1463557377696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

819879802944 is a wasteful number, since it uses less digits than its factorization.

819879802944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224747787 (or 224747777 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 69.

The spelling of 819879802944 in words is "eight hundred nineteen billion, eight hundred seventy-nine million, eight hundred two thousand, nine hundred forty-four".