16012861306018 has 32 divisors (see below), whose sum is σ = 25371775067760. Its totient is φ = 7568798469120.

The previous prime is 16012861306009. The next prime is 16012861306049. The reversal of 16012861306018 is 81060316821061.

It can be written as a sum of positive squares in 8 ways, for example, as 9132139495249 + 6880721810769 = 3021943^2 + 2623113^2 .

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 15 ways as a sum of consecutive naturals, for example, 13222753 + ... + 14382868.

Almost surely, 2^{16012861306018} is an apocalyptic number.

16012861306018 is a deficient number, since it is larger than the sum of its proper divisors (9358913761742).

16012861306018 is a wasteful number, since it uses less digits than its factorization.

16012861306018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27605862.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 16012861306018 in words is "sixteen trillion, twelve billion, eight hundred sixty-one million, three hundred six thousand, eighteen".