135666236049131 has 2 divisors, whose sum is σ = 135666236049132. Its totient is φ = 135666236049130.

The previous prime is 135666236049041. The next prime is 135666236049137. The reversal of 135666236049131 is 131940632666531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135666236049131 - 2⁴² = 131268189538027 is a prime.

It is a super-2 number, since 2×135666236049131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135666236049137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67833118024565 + 67833118024566.

It is an arithmetic number, because the mean of its divisors is an integer number (67833118024566).

Almost surely, 2^{135666236049131} is an apocalyptic number.

135666236049131 is a deficient number, since it is larger than the sum of its proper divisors (1).

135666236049131 is an equidigital number, since it uses as much as digits as its factorization.

135666236049131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 135666236049131 in words is "one hundred thirty-five trillion, six hundred sixty-six billion, two hundred thirty-six million, forty-nine thousand, one hundred thirty-one".