134331445251565 has 8 divisors (see below), whose sum is σ = 161198391114360. Its totient is φ = 107464718326272.

The previous prime is 134331445251457. The next prime is 134331445251569. The reversal of 134331445251565 is 565152544133431.

It can be written as a sum of positive squares in 4 ways, for example, as 10233204327844 + 124098240923721 = 3198938^2 + 11139939^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134331445251565 is a prime.

It is a super-2 number, since 2×134331445251565² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134331445251569) 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, 53381500 + ... + 55841269.

It is an arithmetic number, because the mean of its divisors is an integer number (20149798889295).

Almost surely, 2^{134331445251565} is an apocalyptic number.

It is an amenable number.

134331445251565 is a deficient number, since it is larger than the sum of its proper divisors (26866945862795).

134331445251565 is a wasteful number, since it uses less digits than its factorization.

134331445251565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109468751.

The product of its digits is 12960000, while the sum is 52.

Adding to 134331445251565 its reverse (565152544133431), we get a palindrome (699483989384996).

The spelling of 134331445251565 in words is "one hundred thirty-four trillion, three hundred thirty-one billion, four hundred forty-five million, two hundred fifty-one thousand, five hundred sixty-five".