12887395489 has 8 divisors (see below), whose sum is σ = 13449359232. Its totient is φ = 12325568640.

The previous prime is 12887395439. The next prime is 12887395501. The reversal of 12887395489 is 98459378821.

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

It is a cyclic number.

It is not a de Polignac number, because 12887395489 - 2²⁹ = 12350524577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12887395489.

It is not an unprimeable number, because it can be changed into a prime (12887395439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189297 + ... + 248209.

It is an arithmetic number, because the mean of its divisors is an integer number (1681169904).

Almost surely, 2^12887395489 is an apocalyptic number.

It is an amenable number.

12887395489 is a deficient number, since it is larger than the sum of its proper divisors (561963743).

12887395489 is an equidigital number, since it uses as much as digits as its factorization.

12887395489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68447.

The product of its digits is 34836480, while the sum is 64.

The spelling of 12887395489 in words is "twelve billion, eight hundred eighty-seven million, three hundred ninety-five thousand, four hundred eighty-nine".