134543402521 has 8 divisors (see below), whose sum is σ = 146798941824. Its totient is φ = 122291916720.

The previous prime is 134543402503. The next prime is 134543402533. The reversal of 134543402521 is 125204345431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134543402521 - 2⁷ = 134543402393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134543402501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943761 + ... + 1076926.

It is an arithmetic number, because the mean of its divisors is an integer number (18349867728).

Almost surely, 2^134543402521 is an apocalyptic number.

134543402521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134543402521 is a deficient number, since it is larger than the sum of its proper divisors (12255539303).

134543402521 is a wasteful number, since it uses less digits than its factorization.

134543402521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026751.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 134543402521 its reverse (125204345431), we get a palindrome (259747747952).

The spelling of 134543402521 in words is "one hundred thirty-four billion, five hundred forty-three million, four hundred two thousand, five hundred twenty-one".