134331504660021 has 16 divisors (see below), whose sum is σ = 181132014672000. Its totient is φ = 88542786486528.

The previous prime is 134331504660013. The next prime is 134331504660061. The reversal of 134331504660021 is 120066405133431.

It is not a de Polignac number, because 134331504660021 - 2³ = 134331504660013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134331504660061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10664161 + ... + 19554726.

It is an arithmetic number, because the mean of its divisors is an integer number (11320750917000).

Almost surely, 2^{134331504660021} is an apocalyptic number.

It is an amenable number.

134331504660021 is a deficient number, since it is larger than the sum of its proper divisors (46800510011979).

134331504660021 is a wasteful number, since it uses less digits than its factorization.

134331504660021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30235628.

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 134331504660021 its reverse (120066405133431), we get a palindrome (254397909793452).

The spelling of 134331504660021 in words is "one hundred thirty-four trillion, three hundred thirty-one billion, five hundred four million, six hundred sixty thousand, twenty-one".