12478484491 has 6 divisors (see below), whose sum is σ = 13716020276. Its totient is φ = 11344076700.

The previous prime is 12478484489. The next prime is 12478484497. The reversal of 12478484491 is 19448487421.

It is not a de Polignac number, because 12478484491 - 2¹ = 12478484489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12478484497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51563865 + ... + 51564106.

Almost surely, 2^12478484491 is an apocalyptic number.

12478484491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12478484491 is a deficient number, since it is larger than the sum of its proper divisors (1237535785).

12478484491 is a wasteful number, since it uses less digits than its factorization.

12478484491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103127993 (or 103127982 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The spelling of 12478484491 in words is "twelve billion, four hundred seventy-eight million, four hundred eighty-four thousand, four hundred ninety-one".