135992678665 has 32 divisors (see below), whose sum is σ = 166056946560. Its totient is φ = 106902528000.

The previous prime is 135992678663. The next prime is 135992678669. The reversal of 135992678665 is 566876299531.

It is not a de Polignac number, because 135992678665 - 2¹ = 135992678663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135992678665.

It is not an unprimeable number, because it can be changed into a prime (135992678663) 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, 57942022 + ... + 57944368.

It is an arithmetic number, because the mean of its divisors is an integer number (5189279580).

Almost surely, 2^135992678665 is an apocalyptic number.

It is an amenable number.

135992678665 is a deficient number, since it is larger than the sum of its proper divisors (30064267895).

135992678665 is a wasteful number, since it uses less digits than its factorization.

135992678665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273.

The product of its digits is 146966400, while the sum is 67.

The spelling of 135992678665 in words is "one hundred thirty-five billion, nine hundred ninety-two million, six hundred seventy-eight thousand, six hundred sixty-five".