12512637501389 has 2 divisors, whose sum is σ = 12512637501390. Its totient is φ = 12512637501388.

The previous prime is 12512637501341. The next prime is 12512637501449. The reversal of 12512637501389 is 98310573621521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7365025244164 + 5147612257225 = 2713858^2 + 2268835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12512637501389 is a prime.

It is a super-3 number, since 3×12512637501389³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12512637501389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12512637521389) by changing a digit.

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 as a sum of consecutive naturals, namely, 6256318750694 + 6256318750695.

It is an arithmetic number, because the mean of its divisors is an integer number (6256318750695).

Almost surely, 2^{12512637501389} is an apocalyptic number.

It is an amenable number.

12512637501389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512637501389 is an equidigital number, since it uses as much as digits as its factorization.

12512637501389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 12512637501389 in words is "twelve trillion, five hundred twelve billion, six hundred thirty-seven million, five hundred one thousand, three hundred eighty-nine".