18105751123 has 2 divisors, whose sum is σ = 18105751124. Its totient is φ = 18105751122.

The previous prime is 18105751093. The next prime is 18105751129. The reversal of 18105751123 is 32115750181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18105751123 - 2⁵ = 18105751091 is a prime.

It is a super-2 number, since 2×18105751123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18105751129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9052875561 + 9052875562.

It is an arithmetic number, because the mean of its divisors is an integer number (9052875562).

Almost surely, 2^18105751123 is an apocalyptic number.

18105751123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18105751123 is an equidigital number, since it uses as much as digits as its factorization.

18105751123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 18105751123 in words is "eighteen billion, one hundred five million, seven hundred fifty-one thousand, one hundred twenty-three".