12403930478 has 4 divisors (see below), whose sum is σ = 18605895720. Its totient is φ = 6201965238.

The previous prime is 12403930471. The next prime is 12403930501. The reversal of 12403930478 is 87403930421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403930471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100982618 + ... + 3100982621.

It is an arithmetic number, because the mean of its divisors is an integer number (4651473930).

Almost surely, 2^12403930478 is an apocalyptic number.

12403930478 is a deficient number, since it is larger than the sum of its proper divisors (6201965242).

12403930478 is an equidigital number, since it uses as much as digits as its factorization.

12403930478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201965241.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 12403930478 in words is "twelve billion, four hundred three million, nine hundred thirty thousand, four hundred seventy-eight".