123511927697 has 2 divisors, whose sum is σ = 123511927698. Its totient is φ = 123511927696.

The previous prime is 123511927691. The next prime is 123511927751. The reversal of 123511927697 is 796729115321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119003610961 + 4508316736 = 344969^2 + 67144^2 .

It is a cyclic number.

It is not a de Polignac number, because 123511927697 - 2⁶ = 123511927633 is a prime.

It is not a weakly prime, because it can be changed into another prime (123511927691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61755963848 + 61755963849.

It is an arithmetic number, because the mean of its divisors is an integer number (61755963849).

Almost surely, 2^123511927697 is an apocalyptic number.

It is an amenable number.

123511927697 is a deficient number, since it is larger than the sum of its proper divisors (1).

123511927697 is an equidigital number, since it uses as much as digits as its factorization.

123511927697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 53.

The spelling of 123511927697 in words is "one hundred twenty-three billion, five hundred eleven million, nine hundred twenty-seven thousand, six hundred ninety-seven".