12269075978 has 8 divisors (see below), whose sum is σ = 19203771168. Its totient is φ = 5867818924.

The previous prime is 12269075971. The next prime is 12269075999. The reversal of 12269075978 is 87957096221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12269075971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133359476 + ... + 133359567.

It is an arithmetic number, because the mean of its divisors is an integer number (2400471396).

Almost surely, 2^12269075978 is an apocalyptic number.

12269075978 is a deficient number, since it is larger than the sum of its proper divisors (6934695190).

12269075978 is a wasteful number, since it uses less digits than its factorization.

12269075978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266719068.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 12269075978 in words is "twelve billion, two hundred sixty-nine million, seventy-five thousand, nine hundred seventy-eight".