134404431254545 has 4 divisors (see below), whose sum is σ = 161285317505460. Its totient is φ = 107523545003632.

The previous prime is 134404431254519. The next prime is 134404431254557. The reversal of 134404431254545 is 545452134404431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92616429330049 + 41788001924496 = 9623743^2 + 6464364^2 .

It is a cyclic number.

It is not a de Polignac number, because 134404431254545 - 2³³ = 134395841319953 is a prime.

It is a super-2 number, since 2×134404431254545² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13440443125450 + ... + 13440443125459.

It is an arithmetic number, because the mean of its divisors is an integer number (40321329376365).

Almost surely, 2^{134404431254545} is an apocalyptic number.

It is an amenable number.

134404431254545 is a deficient number, since it is larger than the sum of its proper divisors (26880886250915).

134404431254545 is an equidigital number, since it uses as much as digits as its factorization.

134404431254545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26880886250914.

The product of its (nonzero) digits is 9216000, while the sum is 49.

Adding to 134404431254545 its reverse (545452134404431), we get a palindrome (679856565658976).

The spelling of 134404431254545 in words is "one hundred thirty-four trillion, four hundred four billion, four hundred thirty-one million, two hundred fifty-four thousand, five hundred forty-five".