135407166566 has 32 divisors (see below), whose sum is σ = 234346804992. Its totient is φ = 57476820960.

The previous prime is 135407166527. The next prime is 135407166569. The reversal of 135407166566 is 665661704531.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135407166569) 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, 11095580 + ... + 11107776.

It is an arithmetic number, because the mean of its divisors is an integer number (7323337656).

Almost surely, 2^135407166566 is an apocalyptic number.

135407166566 is a deficient number, since it is larger than the sum of its proper divisors (98939638426).

135407166566 is a wasteful number, since it uses less digits than its factorization.

135407166566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19724.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 135407166566 in words is "one hundred thirty-five billion, four hundred seven million, one hundred sixty-six thousand, five hundred sixty-six".