18065605328 has 10 divisors (see below), whose sum is σ = 35002110354. Its totient is φ = 9032802656.

The previous prime is 18065605319. The next prime is 18065605379. The reversal of 18065605328 is 82350656081.

It can be written as a sum of positive squares in only one way, i.e., 18065510464 + 94864 = 134408^2 + 308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564550151 + ... + 564550182.

Almost surely, 2^18065605328 is an apocalyptic number.

It is an amenable number.

18065605328 is a deficient number, since it is larger than the sum of its proper divisors (16936505026).

18065605328 is a wasteful number, since it uses less digits than its factorization.

18065605328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129100341 (or 1129100335 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

It can be divided in two parts, 180656053 and 28, that added together give a palindrome (180656081).

The spelling of 18065605328 in words is "eighteen billion, sixty-five million, six hundred five thousand, three hundred twenty-eight".