134542553021 has 4 divisors (see below), whose sum is σ = 134546086044. Its totient is φ = 134539020000.

The previous prime is 134542553009. The next prime is 134542553023. The reversal of 134542553021 is 120355245431.

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 40164568921 + 94377984100 = 200411^2 + 307210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134542553021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134542553023) 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, 1708760 + ... + 1785761.

It is an arithmetic number, because the mean of its divisors is an integer number (33636521511).

Almost surely, 2^134542553021 is an apocalyptic number.

It is an amenable number.

134542553021 is a deficient number, since it is larger than the sum of its proper divisors (3533023).

134542553021 is an equidigital number, since it uses as much as digits as its factorization.

134542553021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533022.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 134542553021 its reverse (120355245431), we get a palindrome (254897798452).

The spelling of 134542553021 in words is "one hundred thirty-four billion, five hundred forty-two million, five hundred fifty-three thousand, twenty-one".