134612895581 has 4 divisors (see below), whose sum is σ = 135418960992. Its totient is φ = 133806830172.

The previous prime is 134612895569. The next prime is 134612895589. The reversal of 134612895581 is 185598216431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134612895581 - 2¹⁰ = 134612894557 is a prime.

It is a super-2 number, since 2×134612895581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134612895589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403032455 + ... + 403032788.

It is an arithmetic number, because the mean of its divisors is an integer number (33854740248).

Almost surely, 2^134612895581 is an apocalyptic number.

It is an amenable number.

134612895581 is a deficient number, since it is larger than the sum of its proper divisors (806065411).

134612895581 is an equidigital number, since it uses as much as digits as its factorization.

134612895581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806065410.

The product of its digits is 2073600, while the sum is 53.

The spelling of 134612895581 in words is "one hundred thirty-four billion, six hundred twelve million, eight hundred ninety-five thousand, five hundred eighty-one".