18380655033 has 16 divisors (see below), whose sum is σ = 26664830976. Its totient is φ = 11194560000.

The previous prime is 18380655031. The next prime is 18380655037. The reversal of 18380655033 is 33055608381.

It is not a de Polignac number, because 18380655033 - 2¹ = 18380655031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18380655031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2425593 + ... + 2433158.

It is an arithmetic number, because the mean of its divisors is an integer number (1666551936).

Almost surely, 2^18380655033 is an apocalyptic number.

18380655033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18380655033 is a deficient number, since it is larger than the sum of its proper divisors (8284175943).

18380655033 is a wasteful number, since it uses less digits than its factorization.

18380655033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858864.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 18380655033 in words is "eighteen billion, three hundred eighty million, six hundred fifty-five thousand, thirty-three".