12118434554 has 16 divisors (see below), whose sum is σ = 18522250560. Its totient is φ = 5945390880.

The previous prime is 12118434553. The next prime is 12118434571. The reversal of 12118434554 is 45543481121.

It is not an unprimeable number, because it can be changed into a prime (12118434553) 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, 236534 + ... + 283169.

It is an arithmetic number, because the mean of its divisors is an integer number (1157640660).

Almost surely, 2^12118434554 is an apocalyptic number.

12118434554 is a deficient number, since it is larger than the sum of its proper divisors (6403816006).

12118434554 is a wasteful number, since it uses less digits than its factorization.

12118434554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519925.

The product of its digits is 76800, while the sum is 38.

The spelling of 12118434554 in words is "twelve billion, one hundred eighteen million, four hundred thirty-four thousand, five hundred fifty-four".