135081777 has 4 divisors (see below), whose sum is σ = 180109040. Its totient is φ = 90054516.

The previous prime is 135081769. The next prime is 135081781. The reversal of 135081777 is 777180531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 135081777 - 2³ = 135081769 is a prime.

It is a super-3 number, since 3×135081777³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135081707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22513627 + ... + 22513632.

It is an arithmetic number, because the mean of its divisors is an integer number (45027260).

Almost surely, 2^135081777 is an apocalyptic number.

It is an amenable number.

135081777 is a deficient number, since it is larger than the sum of its proper divisors (45027263).

135081777 is an equidigital number, since it uses as much as digits as its factorization.

135081777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45027262.

The product of its (nonzero) digits is 41160, while the sum is 39.

The square root of 135081777 is about 11622.4686276195. The cubic root of 135081777 is about 513.0963458377.

The spelling of 135081777 in words is "one hundred thirty-five million, eighty-one thousand, seven hundred seventy-seven".