135169344891 has 96 divisors (see below), whose sum is σ = 239375558400. Its totient is φ = 75122691840.

The previous prime is 135169344883. The next prime is 135169344949. The reversal of 135169344891 is 198443961531.

135169344891 is a `hidden beast` number, since 1 + 3 + 51 + 69 + 3 + 448 + 91 = 666.

It is not a de Polignac number, because 135169344891 - 2³ = 135169344883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135169344811) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13705320 + ... + 13715178.

It is an arithmetic number, because the mean of its divisors is an integer number (2493495400).

Almost surely, 2^135169344891 is an apocalyptic number.

135169344891 is a deficient number, since it is larger than the sum of its proper divisors (104206213509).

135169344891 is a wasteful number, since it uses less digits than its factorization.

135169344891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10166 (or 10153 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 135169344891 in words is "one hundred thirty-five billion, one hundred sixty-nine million, three hundred forty-four thousand, eight hundred ninety-one".