12611813798 has 4 divisors (see below), whose sum is σ = 18917720700. Its totient is φ = 6305906898.

The previous prime is 12611813791. The next prime is 12611813831. The reversal of 12611813798 is 89731811621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89731811621 = 3803 ⋅23595007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611813791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3152953448 + ... + 3152953451.

It is an arithmetic number, because the mean of its divisors is an integer number (4729430175).

Almost surely, 2^12611813798 is an apocalyptic number.

12611813798 is a deficient number, since it is larger than the sum of its proper divisors (6305906902).

12611813798 is an equidigital number, since it uses as much as digits as its factorization.

12611813798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305906901.

The product of its digits is 145152, while the sum is 47.

The spelling of 12611813798 in words is "twelve billion, six hundred eleven million, eight hundred thirteen thousand, seven hundred ninety-eight".