12278489854 has 8 divisors (see below), whose sum is σ = 18420901200. Its totient is φ = 6138189456.

The previous prime is 12278489851. The next prime is 12278489863. The reversal of 12278489854 is 45898487221.

12278489854 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12278489854² (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 (12278489851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513114 + ... + 536509.

It is an arithmetic number, because the mean of its divisors is an integer number (2302612650).

Almost surely, 2^12278489854 is an apocalyptic number.

12278489854 is a deficient number, since it is larger than the sum of its proper divisors (6142411346).

12278489854 is a wasteful number, since it uses less digits than its factorization.

12278489854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055474.

The product of its digits is 10321920, while the sum is 58.

The spelling of 12278489854 in words is "twelve billion, two hundred seventy-eight million, four hundred eighty-nine thousand, eight hundred fifty-four".