12798815064 has 32 divisors (see below), whose sum is σ = 36568043520. Its totient is φ = 3656804256.

The previous prime is 12798815033. The next prime is 12798815069. The reversal of 12798815064 is 46051889721.

It is a junction number, because it is equal to n+sod(n) for n = 12798814998 and 12798815016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12798815069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38091544 + ... + 38091879.

It is an arithmetic number, because the mean of its divisors is an integer number (1142751360).

Almost surely, 2^12798815064 is an apocalyptic number.

12798815064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12798815064 is an abundant number, since it is smaller than the sum of its proper divisors (23769228456).

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

12798815064 is a wasteful number, since it uses less digits than its factorization.

12798815064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76183439 (or 76183435 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 12798815064 in words is "twelve billion, seven hundred ninety-eight million, eight hundred fifteen thousand, sixty-four".