610986313813 has 2 divisors, whose sum is σ = 610986313814. Its totient is φ = 610986313812.

The previous prime is 610986313807. The next prime is 610986313823. The reversal of 610986313813 is 318313689016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560404954404 + 50581359409 = 748602^2 + 224903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610986313813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610986313823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305493156906 + 305493156907.

It is an arithmetic number, because the mean of its divisors is an integer number (305493156907).

Almost surely, 2^610986313813 is an apocalyptic number.

It is an amenable number.

610986313813 is a deficient number, since it is larger than the sum of its proper divisors (1).

610986313813 is an equidigital number, since it uses as much as digits as its factorization.

610986313813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 610986313813 in words is "six hundred ten billion, nine hundred eighty-six million, three hundred thirteen thousand, eight hundred thirteen".