123146768149189 has 2 divisors, whose sum is σ = 123146768149190. Its totient is φ = 123146768149188.

The previous prime is 123146768149177. The next prime is 123146768149217. The reversal of 123146768149189 is 981941867641321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89039322684225 + 34107445464964 = 9436065^2 + 5840158^2 .

It is a cyclic number.

It is not a de Polignac number, because 123146768149189 - 2⁷ = 123146768149061 is a prime.

It is a super-2 number, since 2×123146768149189² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123146768147189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61573384074594 + 61573384074595.

It is an arithmetic number, because the mean of its divisors is an integer number (61573384074595).

Almost surely, 2^{123146768149189} is an apocalyptic number.

It is an amenable number.

123146768149189 is a deficient number, since it is larger than the sum of its proper divisors (1).

123146768149189 is an equidigital number, since it uses as much as digits as its factorization.

123146768149189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125411328, while the sum is 70.

The spelling of 123146768149189 in words is "one hundred twenty-three trillion, one hundred forty-six billion, seven hundred sixty-eight million, one hundred forty-nine thousand, one hundred eighty-nine".