135716604065 has 16 divisors (see below), whose sum is σ = 186140535168. Its totient is φ = 93055360896.

The previous prime is 135716604061. The next prime is 135716604073. The reversal of 135716604065 is 560406617531.

It is a cyclic number.

It is not a de Polignac number, because 135716604065 - 2² = 135716604061 is a prime.

It is a super-4 number, since 4×135716604065⁴ (a number of 46 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135716604061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307394 + ... + 604916.

It is an arithmetic number, because the mean of its divisors is an integer number (11633783448).

Almost surely, 2^135716604065 is an apocalyptic number.

It is an amenable number.

135716604065 is a deficient number, since it is larger than the sum of its proper divisors (50423931103).

135716604065 is a wasteful number, since it uses less digits than its factorization.

135716604065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310568.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 135716604065 in words is "one hundred thirty-five billion, seven hundred sixteen million, six hundred four thousand, sixty-five".