123786000109 has 2 divisors, whose sum is σ = 123786000110. Its totient is φ = 123786000108.

The previous prime is 123786000073. The next prime is 123786000119. The reversal of 123786000109 is 901000687321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90462592900 + 33323407209 = 300770^2 + 182547^2 .

It is a cyclic number.

It is not a de Polignac number, because 123786000109 - 2²⁷ = 123651782381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123786000119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61893000054 + 61893000055.

It is an arithmetic number, because the mean of its divisors is an integer number (61893000055).

Almost surely, 2^123786000109 is an apocalyptic number.

It is an amenable number.

123786000109 is a deficient number, since it is larger than the sum of its proper divisors (1).

123786000109 is an equidigital number, since it uses as much as digits as its factorization.

123786000109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 123786000109 in words is "one hundred twenty-three billion, seven hundred eighty-six million, one hundred nine", and thus it is an aban number.