610663771061 has 2 divisors, whose sum is σ = 610663771062. Its totient is φ = 610663771060.

The previous prime is 610663771037. The next prime is 610663771099. The reversal of 610663771061 is 160177366016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312487708036 + 298176063025 = 559006^2 + 546055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610663771061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610663770061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305331885530 + 305331885531.

It is an arithmetic number, because the mean of its divisors is an integer number (305331885531).

Almost surely, 2^610663771061 is an apocalyptic number.

It is an amenable number.

610663771061 is a deficient number, since it is larger than the sum of its proper divisors (1).

610663771061 is an equidigital number, since it uses as much as digits as its factorization.

610663771061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 610663771061 in words is "six hundred ten billion, six hundred sixty-three million, seven hundred seventy-one thousand, sixty-one".