18501147355 has 16 divisors (see below), whose sum is σ = 22986851328. Its totient is φ = 14280156000.

The previous prime is 18501147349. The next prime is 18501147367. The reversal of 18501147355 is 55374110581.

It is not a de Polignac number, because 18501147355 - 2⁷ = 18501147227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129001 + ... + 231610.

It is an arithmetic number, because the mean of its divisors is an integer number (1436678208).

Almost surely, 2^18501147355 is an apocalyptic number.

18501147355 is a deficient number, since it is larger than the sum of its proper divisors (4485703973).

18501147355 is a wasteful number, since it uses less digits than its factorization.

18501147355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360978.

The product of its (nonzero) digits is 84000, while the sum is 40.

The spelling of 18501147355 in words is "eighteen billion, five hundred one million, one hundred forty-seven thousand, three hundred fifty-five".