12278509484 has 24 divisors (see below), whose sum is σ = 21908150880. Its totient is φ = 6020199936.

The previous prime is 12278509469. The next prime is 12278509487. The reversal of 12278509484 is 48490587221.

It is not an unprimeable number, because it can be changed into a prime (12278509487) 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, 102872 + ... + 187455.

It is an arithmetic number, because the mean of its divisors is an integer number (912839620).

Almost surely, 2^12278509484 is an apocalyptic number.

It is an amenable number.

12278509484 is a deficient number, since it is larger than the sum of its proper divisors (9629641396).

12278509484 is a wasteful number, since it uses less digits than its factorization.

12278509484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290537 (or 290535 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 12278509484 in words is "twelve billion, two hundred seventy-eight million, five hundred nine thousand, four hundred eighty-four".