65350723661 has 2 divisors, whose sum is σ = 65350723662. Its totient is φ = 65350723660.

The previous prime is 65350723651. The next prime is 65350723667. The reversal of 65350723661 is 16632705356.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35445592900 + 29905130761 = 188270^2 + 172931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65350723661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65350723667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32675361830 + 32675361831.

It is an arithmetic number, because the mean of its divisors is an integer number (32675361831).

Almost surely, 2^65350723661 is an apocalyptic number.

It is an amenable number.

65350723661 is a deficient number, since it is larger than the sum of its proper divisors (1).

65350723661 is an equidigital number, since it uses as much as digits as its factorization.

65350723661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 65350723661 in words is "sixty-five billion, three hundred fifty million, seven hundred twenty-three thousand, six hundred sixty-one".