12134521017 has 6 divisors (see below), whose sum is σ = 17527641482. Its totient is φ = 8089680672.

The previous prime is 12134521013. The next prime is 12134521039. The reversal of 12134521017 is 71012543121.

12134521017 is a `hidden beast` number, since 1 + 2 + 134 + 521 + 0 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9716242041 + 2418278976 = 98571^2 + 49176^2 .

It is not a de Polignac number, because 12134521017 - 2² = 12134521013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12134521013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674140048 + ... + 674140065.

Almost surely, 2^12134521017 is an apocalyptic number.

It is an amenable number.

12134521017 is a deficient number, since it is larger than the sum of its proper divisors (5393120465).

12134521017 is a wasteful number, since it uses less digits than its factorization.

12134521017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348280119 (or 1348280116 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 12134521017 in words is "twelve billion, one hundred thirty-four million, five hundred twenty-one thousand, seventeen".