136805175361405 has 32 divisors (see below), whose sum is σ = 166529198094336. Its totient is φ = 107880852516864.

The previous prime is 136805175361391. The next prime is 136805175361409. The reversal of 136805175361405 is 504163571508631.

It is a cyclic number.

It is not a de Polignac number, because 136805175361405 - 2⁷ = 136805175361277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136805175361409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87340564 + ... + 88893106.

It is an arithmetic number, because the mean of its divisors is an integer number (5204037440448).

Almost surely, 2^{136805175361405} is an apocalyptic number.

It is an amenable number.

136805175361405 is a deficient number, since it is larger than the sum of its proper divisors (29724022732931).

136805175361405 is a wasteful number, since it uses less digits than its factorization.

136805175361405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553517.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 136805175361405 in words is "one hundred thirty-six trillion, eight hundred five billion, one hundred seventy-five million, three hundred sixty-one thousand, four hundred five".