12891641519 has 8 divisors (see below), whose sum is σ = 13453504512. Its totient is φ = 12329891640.

The previous prime is 12891641513. The next prime is 12891641599. The reversal of 12891641519 is 91514619821.

12891641519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12891641519 is a prime.

It is a super-2 number, since 2×12891641519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891641513) 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, 273074 + ... + 316784.

It is an arithmetic number, because the mean of its divisors is an integer number (1681688064).

Almost surely, 2^12891641519 is an apocalyptic number.

12891641519 is a deficient number, since it is larger than the sum of its proper divisors (561862993).

12891641519 is a wasteful number, since it uses less digits than its factorization.

12891641519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56557.

The product of its digits is 155520, while the sum is 47.

The spelling of 12891641519 in words is "twelve billion, eight hundred ninety-one million, six hundred forty-one thousand, five hundred nineteen".