123115000061 has 2 divisors, whose sum is σ = 123115000062. Its totient is φ = 123115000060.

The previous prime is 123115000033. The next prime is 123115000067. The reversal of 123115000061 is 160000511321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82444211161 + 40670788900 = 287131^2 + 201670^2 .

It is a cyclic number.

It is not a de Polignac number, because 123115000061 - 2¹⁰ = 123114999037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123114999997 and 123115000042.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123115000067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61557500030 + 61557500031.

It is an arithmetic number, because the mean of its divisors is an integer number (61557500031).

Almost surely, 2^123115000061 is an apocalyptic number.

It is an amenable number.

123115000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

123115000061 is an equidigital number, since it uses as much as digits as its factorization.

123115000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 123115000061 its reverse (160000511321), we get a palindrome (283115511382).

The spelling of 123115000061 in words is "one hundred twenty-three billion, one hundred fifteen million, sixty-one", and thus it is an aban number.