123520552313189 has 2 divisors, whose sum is σ = 123520552313190. Its totient is φ = 123520552313188.

The previous prime is 123520552313173. The next prime is 123520552313227. The reversal of 123520552313189 is 981313255025321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121265575564225 + 2254976748964 = 11012065^2 + 1501658^2 .

It is an emirp because it is prime and its reverse (981313255025321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123520552313189 - 2⁴ = 123520552313173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123520552313689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61760276156594 + 61760276156595.

It is an arithmetic number, because the mean of its divisors is an integer number (61760276156595).

Almost surely, 2^{123520552313189} is an apocalyptic number.

It is an amenable number.

123520552313189 is a deficient number, since it is larger than the sum of its proper divisors (1).

123520552313189 is an equidigital number, since it uses as much as digits as its factorization.

123520552313189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 123520552313189 in words is "one hundred twenty-three trillion, five hundred twenty billion, five hundred fifty-two million, three hundred thirteen thousand, one hundred eighty-nine".