618105599999 has 4 divisors (see below), whose sum is σ = 618440255664. Its totient is φ = 617770944336.

The previous prime is 618105599987. The next prime is 618105600037. The reversal of 618105599999 is 999995501816.

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 618105599999 - 2⁸ = 618105599743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618105599399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167325062 + ... + 167328755.

It is an arithmetic number, because the mean of its divisors is an integer number (154610063916).

Almost surely, 2^618105599999 is an apocalyptic number.

618105599999 is a deficient number, since it is larger than the sum of its proper divisors (334655665).

618105599999 is a wasteful number, since it uses less digits than its factorization.

618105599999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334655664.

The product of its (nonzero) digits is 70858800, while the sum is 71.

The spelling of 618105599999 in words is "six hundred eighteen billion, one hundred five million, five hundred ninety-nine thousand, nine hundred ninety-nine".