18385609478607 has 48 divisors (see below), whose sum is σ = 30419734775040. Its totient is φ = 10482220699776.

The previous prime is 18385609478581. The next prime is 18385609478609. The reversal of 18385609478607 is 70687490658381.

18385609478607 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 5 + 6 + 0 + 9 + 4 + 7 + 8 + 607 = 666.

It is not a de Polignac number, because 18385609478607 - 2¹² = 18385609474511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385609478609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 575199408 + ... + 575231370.

It is an arithmetic number, because the mean of its divisors is an integer number (633744474480).

Almost surely, 2^{18385609478607} is an apocalyptic number.

18385609478607 is a deficient number, since it is larger than the sum of its proper divisors (12034125296433).

18385609478607 is a wasteful number, since it uses less digits than its factorization.

18385609478607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52412 (or 52409 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 18385609478607 in words is "eighteen trillion, three hundred eighty-five billion, six hundred nine million, four hundred seventy-eight thousand, six hundred seven".