145538654171 has 2 divisors, whose sum is σ = 145538654172. Its totient is φ = 145538654170.

The previous prime is 145538654113. The next prime is 145538654189. The reversal of 145538654171 is 171456835541.

It is a strong prime.

It is an emirp because it is prime and its reverse (171456835541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145538654171 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (145538654771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72769327085 + 72769327086.

It is an arithmetic number, because the mean of its divisors is an integer number (72769327086).

Almost surely, 2^145538654171 is an apocalyptic number.

145538654171 is a deficient number, since it is larger than the sum of its proper divisors (1).

145538654171 is an equidigital number, since it uses as much as digits as its factorization.

145538654171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016000, while the sum is 50.

The spelling of 145538654171 in words is "one hundred forty-five billion, five hundred thirty-eight million, six hundred fifty-four thousand, one hundred seventy-one".