135966561715 has 8 divisors (see below), whose sum is σ = 163255355280. Its totient is φ = 108709595232.

The previous prime is 135966561691. The next prime is 135966561719. The reversal of 135966561715 is 517165669531.

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

It is a cyclic number.

It is not a de Polignac number, because 135966561715 - 2³⁵ = 101606823347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135966561719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947369 + ... + 7964458.

It is an arithmetic number, because the mean of its divisors is an integer number (20406919410).

Almost surely, 2^135966561715 is an apocalyptic number.

135966561715 is a deficient number, since it is larger than the sum of its proper divisors (27288793565).

135966561715 is a wasteful number, since it uses less digits than its factorization.

135966561715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15913541.

The product of its digits is 5103000, while the sum is 55.

The spelling of 135966561715 in words is "one hundred thirty-five billion, nine hundred sixty-six million, five hundred sixty-one thousand, seven hundred fifteen".