618066631223 has 2 divisors, whose sum is σ = 618066631224. Its totient is φ = 618066631222.

The previous prime is 618066631211. The next prime is 618066631229. The reversal of 618066631223 is 322136660816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618066631223 - 2³⁰ = 616992889399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618066631229) 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 as a sum of consecutive naturals, namely, 309033315611 + 309033315612.

It is an arithmetic number, because the mean of its divisors is an integer number (309033315612).

Almost surely, 2^618066631223 is an apocalyptic number.

618066631223 is a deficient number, since it is larger than the sum of its proper divisors (1).

618066631223 is an equidigital number, since it uses as much as digits as its factorization.

618066631223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 618066631223 in words is "six hundred eighteen billion, sixty-six million, six hundred thirty-one thousand, two hundred twenty-three".