819244139036 has 12 divisors (see below), whose sum is σ = 1518011198928. Its totient is φ = 385526653632.

The previous prime is 819244139023. The next prime is 819244139057. The reversal of 819244139036 is 630931442918.

819244139036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6023853896 + ... + 6023854031.

It is an arithmetic number, because the mean of its divisors is an integer number (126500933244).

Almost surely, 2^819244139036 is an apocalyptic number.

It is an amenable number.

819244139036 is a deficient number, since it is larger than the sum of its proper divisors (698767059892).

819244139036 is a wasteful number, since it uses less digits than its factorization.

819244139036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12047707948 (or 12047707946 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 819244139036 in words is "eight hundred nineteen billion, two hundred forty-four million, one hundred thirty-nine thousand, thirty-six".