135365987806 has 16 divisors (see below), whose sum is σ = 244269452160. Its totient is φ = 54960626520.

The previous prime is 135365987803. The next prime is 135365987831. The reversal of 135365987806 is 608789563531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135365987803) 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, 254447080 + ... + 254447611.

It is an arithmetic number, because the mean of its divisors is an integer number (15266840760).

Almost surely, 2^135365987806 is an apocalyptic number.

135365987806 is a deficient number, since it is larger than the sum of its proper divisors (108903464354).

135365987806 is a wasteful number, since it uses less digits than its factorization.

135365987806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508894719.

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 135365987806 in words is "one hundred thirty-five billion, three hundred sixty-five million, nine hundred eighty-seven thousand, eight hundred six".