12254557718 has 16 divisors (see below), whose sum is σ = 20837710320. Its totient is φ = 5358267936.

The previous prime is 12254557717. The next prime is 12254557747. The reversal of 12254557718 is 81775545221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12254557717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12402905 + ... + 12403892.

It is an arithmetic number, because the mean of its divisors is an integer number (1302356895).

Almost surely, 2^12254557718 is an apocalyptic number.

12254557718 is a deficient number, since it is larger than the sum of its proper divisors (8583152602).

12254557718 is a wasteful number, since it uses less digits than its factorization.

12254557718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24806831.

The product of its digits is 784000, while the sum is 47.

The spelling of 12254557718 in words is "twelve billion, two hundred fifty-four million, five hundred fifty-seven thousand, seven hundred eighteen".