613660645336 has 8 divisors (see below), whose sum is σ = 1150613710020. Its totient is φ = 306830322664.

The previous prime is 613660645327. The next prime is 613660645337. The reversal of 613660645336 is 633546066316.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 613660645336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613660645337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38353790326 + ... + 38353790341.

Almost surely, 2^613660645336 is an apocalyptic number.

It is an amenable number.

613660645336 is a deficient number, since it is larger than the sum of its proper divisors (536953064684).

613660645336 is a wasteful number, since it uses less digits than its factorization.

613660645336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76707580673 (or 76707580669 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 49.

The spelling of 613660645336 in words is "six hundred thirteen billion, six hundred sixty million, six hundred forty-five thousand, three hundred thirty-six".