123426536089 has 2 divisors, whose sum is σ = 123426536090. Its totient is φ = 123426536088.

The previous prime is 123426536039. The next prime is 123426536131. The reversal of 123426536089 is 980635624321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107671265689 + 15755270400 = 328133^2 + 125520^2 .

It is a cyclic number.

It is not a de Polignac number, because 123426536089 - 2⁷ = 123426535961 is a prime.

It is not a weakly prime, because it can be changed into another prime (123426536039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61713268044 + 61713268045.

It is an arithmetic number, because the mean of its divisors is an integer number (61713268045).

Almost surely, 2^123426536089 is an apocalyptic number.

It is an amenable number.

123426536089 is a deficient number, since it is larger than the sum of its proper divisors (1).

123426536089 is an equidigital number, since it uses as much as digits as its factorization.

123426536089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 123426536089 in words is "one hundred twenty-three billion, four hundred twenty-six million, five hundred thirty-six thousand, eighty-nine".