123034510661 has 2 divisors, whose sum is σ = 123034510662. Its totient is φ = 123034510660.

The previous prime is 123034510639. The next prime is 123034510681. The reversal of 123034510661 is 166015430321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111501898561 + 11532612100 = 333919^2 + 107390^2 .

It is a cyclic number.

It is not a de Polignac number, because 123034510661 - 2⁶ = 123034510597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123034510681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61517255330 + 61517255331.

It is an arithmetic number, because the mean of its divisors is an integer number (61517255331).

Almost surely, 2^123034510661 is an apocalyptic number.

It is an amenable number.

123034510661 is a deficient number, since it is larger than the sum of its proper divisors (1).

123034510661 is an equidigital number, since it uses as much as digits as its factorization.

123034510661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 123034510661 its reverse (166015430321), we get a palindrome (289049940982).

The spelling of 123034510661 in words is "one hundred twenty-three billion, thirty-four million, five hundred ten thousand, six hundred sixty-one".