610664128256818 has 16 divisors (see below), whose sum is σ = 916123330612224. Its totient is φ = 305289685958400.

The previous prime is 610664128256813. The next prime is 610664128256827. The reversal of 610664128256818 is 818652821466016.

It is a self number, because there is not a number n which added to its sum of digits gives 610664128256818.

It is not an unprimeable number, because it can be changed into a prime (610664128256813) 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 7 ways as a sum of consecutive naturals, for example, 1125582418 + ... + 1126124818.

It is an arithmetic number, because the mean of its divisors is an integer number (57257708163264).

Almost surely, 2^{610664128256818} is an apocalyptic number.

610664128256818 is a deficient number, since it is larger than the sum of its proper divisors (305459202355406).

610664128256818 is a wasteful number, since it uses less digits than its factorization.

610664128256818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619497.

The product of its (nonzero) digits is 53084160, while the sum is 64.

The spelling of 610664128256818 in words is "six hundred ten trillion, six hundred sixty-four billion, one hundred twenty-eight million, two hundred fifty-six thousand, eight hundred eighteen".