618544727066 has 32 divisors (see below), whose sum is σ = 1061457747840. Its totient is φ = 264816921600.

The previous prime is 618544726991. The next prime is 618544727083. The reversal of 618544727066 is 660727445816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66930206 + ... + 66939446.

It is an arithmetic number, because the mean of its divisors is an integer number (33170554620).

Almost surely, 2^618544727066 is an apocalyptic number.

618544727066 is a deficient number, since it is larger than the sum of its proper divisors (442913020774).

618544727066 is a wasteful number, since it uses less digits than its factorization.

618544727066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13670.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 618544727066 in words is "six hundred eighteen billion, five hundred forty-four million, seven hundred twenty-seven thousand, sixty-six".