12012651516258 has 48 divisors (see below), whose sum is σ = 26215283409120. Its totient is φ = 3975366719232.

The previous prime is 12012651516191. The next prime is 12012651516269. The reversal of 12012651516258 is 85261515621021.

12012651516258 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 2 + 6 + 5 + 15 + 1 + 625 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522085 + ... + 4929287.

It is an arithmetic number, because the mean of its divisors is an integer number (546151737690).

Almost surely, 2^{12012651516258} is an apocalyptic number.

12012651516258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12012651516258 is an abundant number, since it is smaller than the sum of its proper divisors (14202631892862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12012651516258 is a wasteful number, since it uses less digits than its factorization.

12012651516258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408303 (or 4408300 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The spelling of 12012651516258 in words is "twelve trillion, twelve billion, six hundred fifty-one million, five hundred sixteen thousand, two hundred fifty-eight".