18485960562533 has 8 divisors (see below), whose sum is σ = 18531367963416. Its totient is φ = 18440601088000.

The previous prime is 18485960562493. The next prime is 18485960562583. The reversal of 18485960562533 is 33526506958481.

It can be written as a sum of positive squares in 4 ways, for example, as 3746864805124 + 14739095757409 = 1935682^2 + 3839153^2 .

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 18485960562533 - 2⁶ = 18485960562469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18485960562533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18485960562583) 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, 11209148 + ... + 12752133.

It is an arithmetic number, because the mean of its divisors is an integer number (2316420995427).

Almost surely, 2^{18485960562533} is an apocalyptic number.

It is an amenable number.

18485960562533 is a deficient number, since it is larger than the sum of its proper divisors (45407400883).

18485960562533 is a wasteful number, since it uses less digits than its factorization.

18485960562533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23963175.

The product of its (nonzero) digits is 186624000, while the sum is 65.

The spelling of 18485960562533 in words is "eighteen trillion, four hundred eighty-five billion, nine hundred sixty million, five hundred sixty-two thousand, five hundred thirty-three".