135166515551 has 16 divisors (see below), whose sum is σ = 143782708608. Its totient is φ = 126624768000.

The previous prime is 135166515511. The next prime is 135166515607. The reversal of 135166515551 is 155515661531.

It is a cyclic number.

It is not a de Polignac number, because 135166515551 - 2²² = 135162321247 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 (135166515511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9625031 + ... + 9639063.

It is an arithmetic number, because the mean of its divisors is an integer number (8986419288).

Almost surely, 2^135166515551 is an apocalyptic number.

135166515551 is a deficient number, since it is larger than the sum of its proper divisors (8616193057).

135166515551 is a wasteful number, since it uses less digits than its factorization.

135166515551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16642.

The product of its digits is 337500, while the sum is 44.

The spelling of 135166515551 in words is "one hundred thirty-five billion, one hundred sixty-six million, five hundred fifteen thousand, five hundred fifty-one".