613660612559 has 2 divisors, whose sum is σ = 613660612560. Its totient is φ = 613660612558.

The previous prime is 613660612541. The next prime is 613660612571. The reversal of 613660612559 is 955216066316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613660612559 - 2¹⁶ = 613660547023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613660812559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306830306279 + 306830306280.

It is an arithmetic number, because the mean of its divisors is an integer number (306830306280).

Almost surely, 2^613660612559 is an apocalyptic number.

613660612559 is a deficient number, since it is larger than the sum of its proper divisors (1).

613660612559 is an equidigital number, since it uses as much as digits as its factorization.

613660612559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 613660612559 in words is "six hundred thirteen billion, six hundred sixty million, six hundred twelve thousand, five hundred fifty-nine".