123253060661 has 2 divisors, whose sum is σ = 123253060662. Its totient is φ = 123253060660.

The previous prime is 123253060627. The next prime is 123253060727. The reversal of 123253060661 is 166060352321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113009596561 + 10243464100 = 336169^2 + 101210^2 .

It is a cyclic number.

It is not a de Polignac number, because 123253060661 - 2²² = 123248866357 is a prime.

It is a super-4 number, since 4×123253060661⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123253060361) 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, 61626530330 + 61626530331.

It is an arithmetic number, because the mean of its divisors is an integer number (61626530331).

Almost surely, 2^123253060661 is an apocalyptic number.

It is an amenable number.

123253060661 is a deficient number, since it is larger than the sum of its proper divisors (1).

123253060661 is an equidigital number, since it uses as much as digits as its factorization.

123253060661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 123253060661 in words is "one hundred twenty-three billion, two hundred fifty-three million, sixty thousand, six hundred sixty-one".