12131415466 has 4 divisors (see below), whose sum is σ = 18197123202. Its totient is φ = 6065707732.

The previous prime is 12131415437. The next prime is 12131415487. The reversal of 12131415466 is 66451413121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66451413121 = 42283 ⋅1571587.

It can be written as a sum of positive squares in only one way, i.e., 9925140625 + 2206274841 = 99625^2 + 46971^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3032853865 + ... + 3032853868.

Almost surely, 2^12131415466 is an apocalyptic number.

12131415466 is a deficient number, since it is larger than the sum of its proper divisors (6065707736).

12131415466 is an equidigital number, since it uses as much as digits as its factorization.

12131415466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065707735.

The product of its digits is 17280, while the sum is 34.

Adding to 12131415466 its reverse (66451413121), we get a palindrome (78582828587).

The spelling of 12131415466 in words is "twelve billion, one hundred thirty-one million, four hundred fifteen thousand, four hundred sixty-six".