12802618137123 has 24 divisors (see below), whose sum is σ = 19466763900480. Its totient is φ = 8085533937840.

The previous prime is 12802618137107. The next prime is 12802618137157. The reversal of 12802618137123 is 32173181620821.

12802618137123 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 2 + 618 + 1 + 3 + 7 + 1 + 23 = 666.

It is not a de Polignac number, because 12802618137123 - 2⁴ = 12802618137107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12802618136123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2706040 + ... + 5738282.

It is an arithmetic number, because the mean of its divisors is an integer number (811115162520).

Almost surely, 2^{12802618137123} is an apocalyptic number.

12802618137123 is a deficient number, since it is larger than the sum of its proper divisors (6664145763357).

12802618137123 is a wasteful number, since it uses less digits than its factorization.

12802618137123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056959 (or 3056956 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

Adding to 12802618137123 its reverse (32173181620821), we get a palindrome (44975799757944).

The spelling of 12802618137123 in words is "twelve trillion, eight hundred two billion, six hundred eighteen million, one hundred thirty-seven thousand, one hundred twenty-three".