613511111201 has 2 divisors, whose sum is σ = 613511111202. Its totient is φ = 613511111200.

The previous prime is 613511111111. The next prime is 613511111209. The reversal of 613511111201 is 102111115316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563173701601 + 50337409600 = 750449^2 + 224360^2 .

It is a cyclic number.

It is not a de Polignac number, because 613511111201 - 2¹⁸ = 613510849057 is a prime.

It is not a weakly prime, because it can be changed into another prime (613511111209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306755555600 + 306755555601.

It is an arithmetic number, because the mean of its divisors is an integer number (306755555601).

Almost surely, 2^613511111201 is an apocalyptic number.

It is an amenable number.

613511111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

613511111201 is an equidigital number, since it uses as much as digits as its factorization.

613511111201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 23.

Adding to 613511111201 its reverse (102111115316), we get a palindrome (715622226517).

The spelling of 613511111201 in words is "six hundred thirteen billion, five hundred eleven million, one hundred eleven thousand, two hundred one".