134540553521 has 24 divisors (see below), whose sum is σ = 150193418592. Its totient is φ = 120401582400.

The previous prime is 134540553503. The next prime is 134540553527. The reversal of 134540553521 is 125355045431.

It is a de Polignac number, because none of the positive numbers 2^k-134540553521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134540553527) 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 23 ways as a sum of consecutive naturals, for example, 13947326 + ... + 13956968.

It is an arithmetic number, because the mean of its divisors is an integer number (6258059108).

Almost surely, 2^134540553521 is an apocalyptic number.

134540553521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134540553521 is a deficient number, since it is larger than the sum of its proper divisors (15652865071).

134540553521 is a wasteful number, since it uses less digits than its factorization.

134540553521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453 (or 11442 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 134540553521 its reverse (125355045431), we get a palindrome (259895598952).

The spelling of 134540553521 in words is "one hundred thirty-four billion, five hundred forty million, five hundred fifty-three thousand, five hundred twenty-one".