135775212091 has 2 divisors, whose sum is σ = 135775212092. Its totient is φ = 135775212090.

The previous prime is 135775212059. The next prime is 135775212119. The reversal of 135775212091 is 190212577531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135775212091 - 2⁵ = 135775212059 is a prime.

It is not a weakly prime, because it can be changed into another prime (135775215091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67887606045 + 67887606046.

It is an arithmetic number, because the mean of its divisors is an integer number (67887606046).

Almost surely, 2^135775212091 is an apocalyptic number.

135775212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

135775212091 is an equidigital number, since it uses as much as digits as its factorization.

135775212091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 135775212091 in words is "one hundred thirty-five billion, seven hundred seventy-five million, two hundred twelve thousand, ninety-one".