12281362478 has 16 divisors (see below), whose sum is σ = 22967743104. Its totient is φ = 4784946360.

The previous prime is 12281362469. The next prime is 12281362543. The reversal of 12281362478 is 87426318221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39874400 + ... + 39874707.

It is an arithmetic number, because the mean of its divisors is an integer number (1435483944).

Almost surely, 2^12281362478 is an apocalyptic number.

12281362478 is a deficient number, since it is larger than the sum of its proper divisors (10686380626).

12281362478 is a wasteful number, since it uses less digits than its factorization.

12281362478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79749127.

The product of its digits is 258048, while the sum is 44.

The spelling of 12281362478 in words is "twelve billion, two hundred eighty-one million, three hundred sixty-two thousand, four hundred seventy-eight".