134400622565021 has 8 divisors (see below), whose sum is σ = 142306782232824. Its totient is φ = 126494489640960.

The previous prime is 134400622564997. The next prime is 134400622565029. The reversal of 134400622565021 is 120565226004431.

It can be written as a sum of positive squares in 4 ways, for example, as 7374423616921 + 127026198948100 = 2715589^2 + 11270590^2 .

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 134400622565021 - 2³⁸ = 134125744658077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 134400622565021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134400622565029) 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, 4163741 + ... + 16915613.

It is an arithmetic number, because the mean of its divisors is an integer number (17788347779103).

Almost surely, 2^{134400622565021} is an apocalyptic number.

It is an amenable number.

134400622565021 is a deficient number, since it is larger than the sum of its proper divisors (7906159667803).

134400622565021 is a wasteful number, since it uses less digits than its factorization.

134400622565021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13371871.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 134400622565021 its reverse (120565226004431), we get a palindrome (254965848569452).

The spelling of 134400622565021 in words is "one hundred thirty-four trillion, four hundred billion, six hundred twenty-two million, five hundred sixty-five thousand, twenty-one".