18687333457113 has 8 divisors (see below), whose sum is σ = 24917510920800. Its totient is φ = 12457689149088.

The previous prime is 18687333457103. The next prime is 18687333457129. The reversal of 18687333457113 is 31175433378681.

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

It is not a de Polignac number, because 18687333457113 - 2¹³ = 18687333448921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18687333457103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133207123 + ... + 133347336.

It is an arithmetic number, because the mean of its divisors is an integer number (3114688865100).

Almost surely, 2^{18687333457113} is an apocalyptic number.

It is an amenable number.

18687333457113 is a deficient number, since it is larger than the sum of its proper divisors (6230177463687).

18687333457113 is a wasteful number, since it uses less digits than its factorization.

18687333457113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266577831.

The product of its digits is 30481920, while the sum is 60.

The spelling of 18687333457113 in words is "eighteen trillion, six hundred eighty-seven billion, three hundred thirty-three million, four hundred fifty-seven thousand, one hundred thirteen".