12788744854 has 4 divisors (see below), whose sum is σ = 19183117284. Its totient is φ = 6394372426.

The previous prime is 12788744851. The next prime is 12788744873. The reversal of 12788744854 is 45844788721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45844788721 = 1093 ⋅41943997.

It is a super-2 number, since 2×12788744854² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788744851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197186212 + ... + 3197186215.

It is an arithmetic number, because the mean of its divisors is an integer number (4795779321).

Almost surely, 2^12788744854 is an apocalyptic number.

12788744854 is a deficient number, since it is larger than the sum of its proper divisors (6394372430).

12788744854 is an equidigital number, since it uses as much as digits as its factorization.

12788744854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394372429.

The product of its digits is 16056320, while the sum is 58.

The spelling of 12788744854 in words is "twelve billion, seven hundred eighty-eight million, seven hundred forty-four thousand, eight hundred fifty-four".