618552856331 has 16 divisors (see below), whose sum is σ = 650765456640. Its totient is φ = 587114307360.

The previous prime is 618552856267. The next prime is 618552856343. The reversal of 618552856331 is 133658255816.

It is a cyclic number.

It is not a de Polignac number, because 618552856331 - 2⁶ = 618552856267 is a prime.

It is a super-2 number, since 2×618552856331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (618552856351) 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 15 ways as a sum of consecutive naturals, for example, 281600 + ... + 1147346.

It is an arithmetic number, because the mean of its divisors is an integer number (40672841040).

Almost surely, 2^618552856331 is an apocalyptic number.

618552856331 is a deficient number, since it is larger than the sum of its proper divisors (32212600309).

618552856331 is a wasteful number, since it uses less digits than its factorization.

618552856331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866194.

The product of its digits is 5184000, while the sum is 53.

The spelling of 618552856331 in words is "six hundred eighteen billion, five hundred fifty-two million, eight hundred fifty-six thousand, three hundred thirty-one".