12043298978 has 4 divisors (see below), whose sum is σ = 18064948470. Its totient is φ = 6021649488.

The previous prime is 12043298963. The next prime is 12043298987. The reversal of 12043298978 is 87989234021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87989234021 = 13 ⋅6768402617.

It can be written as a sum of positive squares in only one way, i.e., 8091542209 + 3951756769 = 89953^2 + 62863^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3010824743 + ... + 3010824746.

Almost surely, 2^12043298978 is an apocalyptic number.

12043298978 is a deficient number, since it is larger than the sum of its proper divisors (6021649492).

12043298978 is an equidigital number, since it uses as much as digits as its factorization.

12043298978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021649491.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 12043298978 in words is "twelve billion, forty-three million, two hundred ninety-eight thousand, nine hundred seventy-eight".