13045289887 has 4 divisors (see below), whose sum is σ = 14908902736. Its totient is φ = 11181677040.

The previous prime is 13045289863. The next prime is 13045289909. The reversal of 13045289887 is 78898254031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78898254031 = 43 ⋅1834843117.

It is a cyclic number.

It is not a de Polignac number, because 13045289887 - 2¹⁹ = 13044765599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13045289827) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 931806414 + ... + 931806427.

It is an arithmetic number, because the mean of its divisors is an integer number (3727225684).

Almost surely, 2^13045289887 is an apocalyptic number.

13045289887 is a deficient number, since it is larger than the sum of its proper divisors (1863612849).

13045289887 is an equidigital number, since it uses as much as digits as its factorization.

13045289887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863612848.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 13045289887 in words is "thirteen billion, forty-five million, two hundred eighty-nine thousand, eight hundred eighty-seven".