18014428715506 has 12 divisors (see below), whose sum is σ = 27921427236846. Its totient is φ = 8716659054960.

The previous prime is 18014428715501. The next prime is 18014428715539. The reversal of 18014428715506 is 60551782441081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17927899198225 + 86529517281 = 4234135^2 + 294159^2 .

It is not an unprimeable number, because it can be changed into a prime (18014428715501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4686373915 + ... + 4686377758.

Almost surely, 2^{18014428715506} is an apocalyptic number.

18014428715506 is a deficient number, since it is larger than the sum of its proper divisors (9906998521340).

18014428715506 is an equidigital number, since it uses as much as digits as its factorization.

18014428715506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9372751737 (or 9372751706 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 18014428715506 in words is "eighteen trillion, fourteen billion, four hundred twenty-eight million, seven hundred fifteen thousand, five hundred six".