12512540657064 has 32 divisors (see below), whose sum is σ = 35750116163520. Its totient is φ = 3575011616256.

The previous prime is 12512540657047. The next prime is 12512540657077. The reversal of 12512540657064 is 46075604521521.

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, 37239704169 + ... + 37239704504.

It is an arithmetic number, because the mean of its divisors is an integer number (1117191130110).

Almost surely, 2^{12512540657064} is an apocalyptic number.

12512540657064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12512540657064 is an abundant number, since it is smaller than the sum of its proper divisors (23237575506456).

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

12512540657064 is a wasteful number, since it uses less digits than its factorization.

12512540657064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74479408689 (or 74479408685 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 12512540657064 in words is "twelve trillion, five hundred twelve billion, five hundred forty million, six hundred fifty-seven thousand, sixty-four".