123008913869 has 2 divisors, whose sum is σ = 123008913870. Its totient is φ = 123008913868.

The previous prime is 123008913829. The next prime is 123008913887. The reversal of 123008913869 is 968319800321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109684828969 + 13324084900 = 331187^2 + 115430^2 .

It is a cyclic number.

It is not a de Polignac number, because 123008913869 - 2²⁰ = 123007865293 is a prime.

It is a super-2 number, since 2×123008913869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123008913829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61504456934 + 61504456935.

It is an arithmetic number, because the mean of its divisors is an integer number (61504456935).

Almost surely, 2^123008913869 is an apocalyptic number.

It is an amenable number.

123008913869 is a deficient number, since it is larger than the sum of its proper divisors (1).

123008913869 is an equidigital number, since it uses as much as digits as its factorization.

123008913869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 123008913869 in words is "one hundred twenty-three billion, eight million, nine hundred thirteen thousand, eight hundred sixty-nine".