135211149991 has 2 divisors, whose sum is σ = 135211149992. Its totient is φ = 135211149990.

The previous prime is 135211149989. The next prime is 135211150069. The reversal of 135211149991 is 199941112531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135211149991 - 2¹ = 135211149989 is a prime.

Together with 135211149989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135211149971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67605574995 + 67605574996.

It is an arithmetic number, because the mean of its divisors is an integer number (67605574996).

Almost surely, 2^135211149991 is an apocalyptic number.

135211149991 is a deficient number, since it is larger than the sum of its proper divisors (1).

135211149991 is an equidigital number, since it uses as much as digits as its factorization.

135211149991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 46.

The spelling of 135211149991 in words is "one hundred thirty-five billion, two hundred eleven million, one hundred forty-nine thousand, nine hundred ninety-one".