135601811 has 2 divisors, whose sum is σ = 135601812. Its totient is φ = 135601810.

The previous prime is 135601799. The next prime is 135601853. The reversal of 135601811 is 118106531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135601811 - 2¹⁸ = 135339667 is a prime.

It is a super-2 number, since 2×135601811² = 36775702292959442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135601861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67800905 + 67800906.

It is an arithmetic number, because the mean of its divisors is an integer number (67800906).

Almost surely, 2^135601811 is an apocalyptic number.

135601811 is a deficient number, since it is larger than the sum of its proper divisors (1).

135601811 is an equidigital number, since it uses as much as digits as its factorization.

135601811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 135601811 is about 11644.8190625703. The cubic root of 135601811 is about 513.7539372936.

The spelling of 135601811 in words is "one hundred thirty-five million, six hundred one thousand, eight hundred eleven".