18645066750133 has 8 divisors (see below), whose sum is σ = 19104990934680. Its totient is φ = 18185388587520.

The previous prime is 18645066750059. The next prime is 18645066750157. The reversal of 18645066750133 is 33105766054681.

It can be written as a sum of positive squares in 4 ways, for example, as 1037786363524 + 17607280386609 = 1018718^2 + 4196103^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18645066750133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18645066750733) 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, 61352038 + ... + 61655191.

It is an arithmetic number, because the mean of its divisors is an integer number (2388123866835).

Almost surely, 2^{18645066750133} is an apocalyptic number.

It is an amenable number.

18645066750133 is a deficient number, since it is larger than the sum of its proper divisors (459924184547).

18645066750133 is a wasteful number, since it uses less digits than its factorization.

18645066750133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123010967.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 18645066750133 in words is "eighteen trillion, six hundred forty-five billion, sixty-six million, seven hundred fifty thousand, one hundred thirty-three".