135151221187 has 2 divisors, whose sum is σ = 135151221188. Its totient is φ = 135151221186.

The previous prime is 135151221181. The next prime is 135151221239. The reversal of 135151221187 is 781122151531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135151221187 is a prime.

It is not a weakly prime, because it can be changed into another prime (135151221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67575610593 + 67575610594.

It is an arithmetic number, because the mean of its divisors is an integer number (67575610594).

Almost surely, 2^135151221187 is an apocalyptic number.

135151221187 is a deficient number, since it is larger than the sum of its proper divisors (1).

135151221187 is an equidigital number, since it uses as much as digits as its factorization.

135151221187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 37.

The spelling of 135151221187 in words is "one hundred thirty-five billion, one hundred fifty-one million, two hundred twenty-one thousand, one hundred eighty-seven".