34123545187 has 2 divisors, whose sum is σ = 34123545188. Its totient is φ = 34123545186.

The previous prime is 34123545179. The next prime is 34123545229. The reversal of 34123545187 is 78154532143.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34123545187 - 2³ = 34123545179 is a prime.

It is a super-2 number, since 2×34123545187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34123545107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17061772593 + 17061772594.

It is an arithmetic number, because the mean of its divisors is an integer number (17061772594).

Almost surely, 2^34123545187 is an apocalyptic number.

34123545187 is a deficient number, since it is larger than the sum of its proper divisors (1).

34123545187 is an equidigital number, since it uses as much as digits as its factorization.

34123545187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The spelling of 34123545187 in words is "thirty-four billion, one hundred twenty-three million, five hundred forty-five thousand, one hundred eighty-seven".