185755145135939 has 2 divisors, whose sum is σ = 185755145135940. Its totient is φ = 185755145135938.

The previous prime is 185755145135867. The next prime is 185755145135993. The reversal of 185755145135939 is 939531541557581.

Together with next prime (185755145135993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185755145135939 is a prime.

It is not a weakly prime, because it can be changed into another prime (185755145135999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92877572567969 + 92877572567970.

It is an arithmetic number, because the mean of its divisors is an integer number (92877572567970).

Almost surely, 2^{185755145135939} is an apocalyptic number.

185755145135939 is a deficient number, since it is larger than the sum of its proper divisors (1).

185755145135939 is an equidigital number, since it uses as much as digits as its factorization.

185755145135939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300000, while the sum is 71.

The spelling of 185755145135939 in words is "one hundred eighty-five trillion, seven hundred fifty-five billion, one hundred forty-five million, one hundred thirty-five thousand, nine hundred thirty-nine".