135418254187 has 2 divisors, whose sum is σ = 135418254188. Its totient is φ = 135418254186.

The previous prime is 135418254157. The next prime is 135418254193. The reversal of 135418254187 is 781452814531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135418254187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135418254187.

It is not a weakly prime, because it can be changed into another prime (135418254157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67709127093 + 67709127094.

It is an arithmetic number, because the mean of its divisors is an integer number (67709127094).

Almost surely, 2^135418254187 is an apocalyptic number.

135418254187 is a deficient number, since it is larger than the sum of its proper divisors (1).

135418254187 is an equidigital number, since it uses as much as digits as its factorization.

135418254187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 49.

The spelling of 135418254187 in words is "one hundred thirty-five billion, four hundred eighteen million, two hundred fifty-four thousand, one hundred eighty-seven".