135261615 has 8 divisors (see below), whose sum is σ = 216418608. Its totient is φ = 72139520.

The previous prime is 135261611. The next prime is 135261619. The reversal of 135261615 is 516162531.

It is an interprime number because it is at equal distance from previous prime (135261611) and next prime (135261619).

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

It is not a de Polignac number, because 135261615 - 2² = 135261611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135261611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4508706 + ... + 4508735.

It is an arithmetic number, because the mean of its divisors is an integer number (27052326).

Almost surely, 2^135261615 is an apocalyptic number.

135261615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135261615 is a deficient number, since it is larger than the sum of its proper divisors (81156993).

135261615 is an equidigital number, since it uses as much as digits as its factorization.

135261615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017449.

The product of its digits is 5400, while the sum is 30.

The square root of 135261615 is about 11630.2027067459. The cubic root of 135261615 is about 513.3239445163.

The spelling of 135261615 in words is "one hundred thirty-five million, two hundred sixty-one thousand, six hundred fifteen".