613664043223615 has 32 divisors (see below), whose sum is σ = 783166922838720. Its totient is φ = 460285601255424.

The previous prime is 613664043223613. The next prime is 613664043223657. The reversal of 613664043223615 is 516322340466316.

It is a cyclic number.

It is not a de Polignac number, because 613664043223615 - 2¹ = 613664043223613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613664043223613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349266049 + ... + 351018661.

It is an arithmetic number, because the mean of its divisors is an integer number (24473966338710).

Almost surely, 2^{613664043223615} is an apocalyptic number.

613664043223615 is a deficient number, since it is larger than the sum of its proper divisors (169502879615105).

613664043223615 is a wasteful number, since it uses less digits than its factorization.

613664043223615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790731.

The product of its (nonzero) digits is 11197440, while the sum is 52.

The spelling of 613664043223615 in words is "six hundred thirteen trillion, six hundred sixty-four billion, forty-three million, two hundred twenty-three thousand, six hundred fifteen".