618354668563 has 4 divisors (see below), whose sum is σ = 618366369600. Its totient is φ = 618342967528.

The previous prime is 618354668557. The next prime is 618354668611. The reversal of 618354668563 is 365866453816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 618354668563 - 2²¹ = 618352571411 is a prime.

It is a super-2 number, since 2×618354668563² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618354668513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5770888 + ... + 5877061.

It is an arithmetic number, because the mean of its divisors is an integer number (154591592400).

Almost surely, 2^618354668563 is an apocalyptic number.

618354668563 is a deficient number, since it is larger than the sum of its proper divisors (11701037).

618354668563 is a wasteful number, since it uses less digits than its factorization.

618354668563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11701036.

The product of its digits is 74649600, while the sum is 61.

The spelling of 618354668563 in words is "six hundred eighteen billion, three hundred fifty-four million, six hundred sixty-eight thousand, five hundred sixty-three".