12280902418 has 4 divisors (see below), whose sum is σ = 18421353630. Its totient is φ = 6140451208.

The previous prime is 12280902349. The next prime is 12280902421. The reversal of 12280902418 is 81420908221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81420908221 = 19 ⋅4285310959.

It can be written as a sum of positive squares in only one way, i.e., 6496843609 + 5784058809 = 80603^2 + 76053^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3070225603 + ... + 3070225606.

Almost surely, 2^12280902418 is an apocalyptic number.

12280902418 is a deficient number, since it is larger than the sum of its proper divisors (6140451212).

12280902418 is an equidigital number, since it uses as much as digits as its factorization.

12280902418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6140451211.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 12280902418 in words is "twelve billion, two hundred eighty million, nine hundred two thousand, four hundred eighteen".