13194500631887 has 4 divisors (see below), whose sum is σ = 13226761025040. Its totient is φ = 13162240238736.

The previous prime is 13194500631877. The next prime is 13194500631947. The reversal of 13194500631887 is 78813600549131.

It is a happy number.

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 13194500631887 - 2¹⁰ = 13194500630863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13194500631877) 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, 16130195963 + ... + 16130196780.

It is an arithmetic number, because the mean of its divisors is an integer number (3306690256260).

Almost surely, 2^{13194500631887} is an apocalyptic number.

13194500631887 is a deficient number, since it is larger than the sum of its proper divisors (32260393153).

13194500631887 is an equidigital number, since it uses as much as digits as its factorization.

13194500631887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32260393152.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 13194500631887 in words is "thirteen trillion, one hundred ninety-four billion, five hundred million, six hundred thirty-one thousand, eight hundred eighty-seven".