18107236123 has 2 divisors, whose sum is σ = 18107236124. Its totient is φ = 18107236122.

The previous prime is 18107236117. The next prime is 18107236153. The reversal of 18107236123 is 32163270181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18107236123 is a prime.

It is a super-2 number, since 2×18107236123² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (18107236153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9053618061 + 9053618062.

It is an arithmetic number, because the mean of its divisors is an integer number (9053618062).

Almost surely, 2^18107236123 is an apocalyptic number.

18107236123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18107236123 is an equidigital number, since it uses as much as digits as its factorization.

18107236123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 18107236123 in words is "eighteen billion, one hundred seven million, two hundred thirty-six thousand, one hundred twenty-three".