18520366670353 has 8 divisors (see below), whose sum is σ = 18643137696576. Its totient is φ = 18397597218000.

The previous prime is 18520366670321. The next prime is 18520366670357. The reversal of 18520366670353 is 35307666302581.

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

It is a cyclic number.

It is not a de Polignac number, because 18520366670353 - 2⁵ = 18520366670321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18520366670294 and 18520366670303.

It is not an unprimeable number, because it can be changed into a prime (18520366670357) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32059575 + ... + 32632147.

It is an arithmetic number, because the mean of its divisors is an integer number (2330392212072).

Almost surely, 2^{18520366670353} is an apocalyptic number.

It is an amenable number.

18520366670353 is a deficient number, since it is larger than the sum of its proper divisors (122771026223).

18520366670353 is a wasteful number, since it uses less digits than its factorization.

18520366670353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786935.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 18520366670353 in words is "eighteen trillion, five hundred twenty billion, three hundred sixty-six million, six hundred seventy thousand, three hundred fifty-three".