12511087465 has 8 divisors (see below), whose sum is σ = 15021331848. Its totient is φ = 10003518720.

The previous prime is 12511087439. The next prime is 12511087469. The reversal of 12511087465 is 56478011521.

12511087465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1449096489 + 11061990976 = 38067^2 + 105176^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12511087465 - 2⁹ = 12511086953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12511087469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658606 + ... + 677335.

It is an arithmetic number, because the mean of its divisors is an integer number (1877666481).

Almost surely, 2^12511087465 is an apocalyptic number.

It is an amenable number.

12511087465 is a deficient number, since it is larger than the sum of its proper divisors (2510244383).

12511087465 is a wasteful number, since it uses less digits than its factorization.

12511087465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337819.

The product of its (nonzero) digits is 67200, while the sum is 40.

Adding to 12511087465 its reverse (56478011521), we get a palindrome (68989098986).

The spelling of 12511087465 in words is "twelve billion, five hundred eleven million, eighty-seven thousand, four hundred sixty-five".