13145298887 has 4 divisors (see below), whose sum is σ = 15023198736. Its totient is φ = 11267399040.

The previous prime is 13145298857. The next prime is 13145298893. The reversal of 13145298887 is 78889254131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13145298887 - 2⁸ = 13145298631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145298847) 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, 938949914 + ... + 938949927.

It is an arithmetic number, because the mean of its divisors is an integer number (3755799684).

Almost surely, 2^13145298887 is an apocalyptic number.

13145298887 is a deficient number, since it is larger than the sum of its proper divisors (1877899849).

13145298887 is an equidigital number, since it uses as much as digits as its factorization.

13145298887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877899848.

The product of its digits is 3870720, while the sum is 56.

The spelling of 13145298887 in words is "thirteen billion, one hundred forty-five million, two hundred ninety-eight thousand, eight hundred eighty-seven".