613545564520 has 128 divisors (see below), whose sum is σ = 1675869212160. Its totient is φ = 197347368960.

The previous prime is 613545564491. The next prime is 613545564521. The reversal of 613545564520 is 25465545316.

It is not an unprimeable number, because it can be changed into a prime (613545564521) 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 in 31 ways as a sum of consecutive naturals, for example, 1273132 + ... + 1687588.

It is an arithmetic number, because the mean of its divisors is an integer number (13092728220).

Almost surely, 2^613545564520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613545564520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837934606080).

613545564520 is an abundant number, since it is smaller than the sum of its proper divisors (1062323647640).

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

613545564520 is a wasteful number, since it uses less digits than its factorization.

613545564520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414803 (or 414799 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 613545564520 in words is "six hundred thirteen billion, five hundred forty-five million, five hundred sixty-four thousand, five hundred twenty".