135137865 has 8 divisors (see below), whose sum is σ = 216220608. Its totient is φ = 72073520.

The previous prime is 135137851. The next prime is 135137881. The reversal of 135137865 is 568731531.

It is a happy number.

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

It is not a de Polignac number, because 135137865 - 2⁵ = 135137833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504581 + ... + 4504610.

It is an arithmetic number, because the mean of its divisors is an integer number (27027576).

Almost surely, 2^135137865 is an apocalyptic number.

135137865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135137865 is a deficient number, since it is larger than the sum of its proper divisors (81082743).

135137865 is an equidigital number, since it uses as much as digits as its factorization.

135137865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009199.

The product of its digits is 75600, while the sum is 39.

The square root of 135137865 is about 11624.8812897165. The cubic root of 135137865 is about 513.1673511362.

The spelling of 135137865 in words is "one hundred thirty-five million, one hundred thirty-seven thousand, eight hundred sixty-five".