18688113260551 has 8 divisors (see below), whose sum is σ = 21358060369280. Its totient is φ = 16018220312568.

The previous prime is 18688113260503. The next prime is 18688113260567. The reversal of 18688113260551 is 15506231188681.

It is a happy number.

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 18688113260551 - 2⁴³ = 9892020238343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18688113260492 and 18688113260501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18688113260501) 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, 12798081 + ... + 14183338.

It is an arithmetic number, because the mean of its divisors is an integer number (2669757546160).

Almost surely, 2^{18688113260551} is an apocalyptic number.

18688113260551 is a deficient number, since it is larger than the sum of its proper divisors (2669947108729).

18688113260551 is an equidigital number, since it uses as much as digits as its factorization.

18688113260551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27080373.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 18688113260551 in words is "eighteen trillion, six hundred eighty-eight billion, one hundred thirteen million, two hundred sixty thousand, five hundred fifty-one".