613660645328 has 20 divisors (see below), whose sum is σ = 1227321291648. Its totient is φ = 296932570080.

The previous prime is 613660645327. The next prime is 613660645337. The reversal of 613660645328 is 823546066316.

613660645328 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613660645327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618609026 + ... + 618610017.

Almost surely, 2^613660645328 is an apocalyptic number.

It is an amenable number.

613660645328 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613660645328 is a wasteful number, since it uses less digits than its factorization.

613660645328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237219082 (or 1237219076 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 613660645328 in words is "six hundred thirteen billion, six hundred sixty million, six hundred forty-five thousand, three hundred twenty-eight".