135801017015 has 4 divisors (see below), whose sum is σ = 162961220424. Its totient is φ = 108640813608.

The previous prime is 135801016997. The next prime is 135801017113. The reversal of 135801017015 is 510710108531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135801017015 - 2¹⁸ = 135800754871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13580101697 + ... + 13580101706.

It is an arithmetic number, because the mean of its divisors is an integer number (40740305106).

Almost surely, 2^135801017015 is an apocalyptic number.

135801017015 is a deficient number, since it is larger than the sum of its proper divisors (27160203409).

135801017015 is an equidigital number, since it uses as much as digits as its factorization.

135801017015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27160203408.

The product of its (nonzero) digits is 4200, while the sum is 32.

The spelling of 135801017015 in words is "one hundred thirty-five billion, eight hundred one million, seventeen thousand, fifteen".