610618620061 has 2 divisors, whose sum is σ = 610618620062. Its totient is φ = 610618620060.

The previous prime is 610618620047. The next prime is 610618620097. The reversal of 610618620061 is 160026816016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610282814436 + 335805625 = 781206^2 + 18325^2 .

It is a cyclic number.

It is not a de Polignac number, because 610618620061 - 2⁹ = 610618619549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 610618620061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610618620361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305309310030 + 305309310031.

It is an arithmetic number, because the mean of its divisors is an integer number (305309310031).

Almost surely, 2^610618620061 is an apocalyptic number.

It is an amenable number.

610618620061 is a deficient number, since it is larger than the sum of its proper divisors (1).

610618620061 is an equidigital number, since it uses as much as digits as its factorization.

610618620061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 610618620061 in words is "six hundred ten billion, six hundred eighteen million, six hundred twenty thousand, sixty-one".