613545103621 has 16 divisors (see below), whose sum is σ = 650214956160. Its totient is φ = 577326312000.

The previous prime is 613545103609. The next prime is 613545103649. The reversal of 613545103621 is 126301545316.

It is a cyclic number.

It is not a de Polignac number, because 613545103621 - 2⁹ = 613545103109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613545103651) 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 15 ways as a sum of consecutive naturals, for example, 1484496 + ... + 1852246.

It is an arithmetic number, because the mean of its divisors is an integer number (40638434760).

Almost surely, 2^613545103621 is an apocalyptic number.

It is an amenable number.

613545103621 is a deficient number, since it is larger than the sum of its proper divisors (36669852539).

613545103621 is a wasteful number, since it uses less digits than its factorization.

613545103621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368364.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 613545103621 its reverse (126301545316), we get a palindrome (739846648937).

The spelling of 613545103621 in words is "six hundred thirteen billion, five hundred forty-five million, one hundred three thousand, six hundred twenty-one".