134320136557 has 4 divisors (see below), whose sum is σ = 137950410556. Its totient is φ = 130689862560.

The previous prime is 134320136537. The next prime is 134320136569. The reversal of 134320136557 is 755631023431.

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 77745611241 + 56574525316 = 278829^2 + 237854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134320136557 is a prime.

It is a super-2 number, since 2×134320136557² (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 (134320136537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815136944 + ... + 1815137017.

It is an arithmetic number, because the mean of its divisors is an integer number (34487602639).

Almost surely, 2^134320136557 is an apocalyptic number.

It is an amenable number.

134320136557 is a deficient number, since it is larger than the sum of its proper divisors (3630273999).

134320136557 is an equidigital number, since it uses as much as digits as its factorization.

134320136557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630273998.

The product of its (nonzero) digits is 226800, while the sum is 40.

Adding to 134320136557 its reverse (755631023431), we get a palindrome (889951159988).

The spelling of 134320136557 in words is "one hundred thirty-four billion, three hundred twenty million, one hundred thirty-six thousand, five hundred fifty-seven".