613613260537 has 2 divisors, whose sum is σ = 613613260538. Its totient is φ = 613613260536.

The previous prime is 613613260529. The next prime is 613613260621. The reversal of 613613260537 is 735062316316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533694535936 + 79918724601 = 730544^2 + 282699^2 .

It is a cyclic number.

It is not a de Polignac number, because 613613260537 - 2³ = 613613260529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613613260493 and 613613260502.

It is not a weakly prime, because it can be changed into another prime (613613260837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306806630268 + 306806630269.

It is an arithmetic number, because the mean of its divisors is an integer number (306806630269).

Almost surely, 2^613613260537 is an apocalyptic number.

It is an amenable number.

613613260537 is a deficient number, since it is larger than the sum of its proper divisors (1).

613613260537 is an equidigital number, since it uses as much as digits as its factorization.

613613260537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 43.

The spelling of 613613260537 in words is "six hundred thirteen billion, six hundred thirteen million, two hundred sixty thousand, five hundred thirty-seven".