135777805 has 8 divisors (see below), whose sum is σ = 163033344. Its totient is φ = 108555600.

The previous prime is 135777779. The next prime is 135777881. The reversal of 135777805 is 508777531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135777805 - 2²⁷ = 1560077 is a prime.

It is a super-2 number, since 2×135777805² = 36871224661236050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740 + ... + 16570.

It is an arithmetic number, because the mean of its divisors is an integer number (20379168).

Almost surely, 2^135777805 is an apocalyptic number.

It is an amenable number.

135777805 is a deficient number, since it is larger than the sum of its proper divisors (27255539).

135777805 is a wasteful number, since it uses less digits than its factorization.

135777805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667.

The product of its (nonzero) digits is 205800, while the sum is 43.

The square root of 135777805 is about 11652.3733633968. The cubic root of 135777805 is about 513.9761037506.

The spelling of 135777805 in words is "one hundred thirty-five million, seven hundred seventy-seven thousand, eight hundred five".