613545552644 has 12 divisors (see below), whose sum is σ = 1073719649100. Its totient is φ = 306768510048.

The previous prime is 613545552643. The next prime is 613545552661. The reversal of 613545552644 is 446255545316.

It can be written as a sum of positive squares in 2 ways, for example, as 308302562500 + 305242990144 = 555250^2 + 552488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 613545552592 and 613545552601.

It is not an unprimeable number, because it can be changed into a prime (613545552643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731279 + ... + 1327350.

It is an arithmetic number, because the mean of its divisors is an integer number (89476637425).

Almost surely, 2^613545552644 is an apocalyptic number.

It is an amenable number.

613545552644 is a deficient number, since it is larger than the sum of its proper divisors (460174096456).

613545552644 is a wasteful number, since it uses less digits than its factorization.

613545552644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133142 (or 2133140 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 50.

The spelling of 613545552644 in words is "six hundred thirteen billion, five hundred forty-five million, five hundred fifty-two thousand, six hundred forty-four".