12001440854 has 16 divisors (see below), whose sum is σ = 19399836960. Its totient is φ = 5535442560.

The previous prime is 12001440821. The next prime is 12001440863. The reversal of 12001440854 is 45804410021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113459 + ... + 192030.

It is an arithmetic number, because the mean of its divisors is an integer number (1212489810).

Almost surely, 2^12001440854 is an apocalyptic number.

12001440854 is a deficient number, since it is larger than the sum of its proper divisors (7398396106).

12001440854 is a wasteful number, since it uses less digits than its factorization.

12001440854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307015.

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 12001440854 its reverse (45804410021), we get a palindrome (57805850875).

The spelling of 12001440854 in words is "twelve billion, one million, four hundred forty thousand, eight hundred fifty-four".