12330309978 has 48 divisors (see below), whose sum is σ = 30541193280. Its totient is φ = 3521907648.

The previous prime is 12330309961. The next prime is 12330310019. The reversal of 12330309978 is 87990303321.

12330309978 is a `hidden beast` number, since 1 + 2 + 330 + 309 + 9 + 7 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482601 + ... + 507507.

It is an arithmetic number, because the mean of its divisors is an integer number (636274860).

Almost surely, 2^12330309978 is an apocalyptic number.

12330309978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12330309978 is an abundant number, since it is smaller than the sum of its proper divisors (18210883302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12330309978 is a wasteful number, since it uses less digits than its factorization.

12330309978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28851 (or 28848 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 12330309978 in words is "twelve billion, three hundred thirty million, three hundred nine thousand, nine hundred seventy-eight".