506664164525 has 24 divisors (see below), whose sum is σ = 664756768320. Its totient is φ = 382008407040.

The previous prime is 506664164507. The next prime is 506664164527. The reversal of 506664164525 is 525461466605.

It is a de Polignac number, because none of the positive numbers 2^k-506664164525 is a prime.

It is a super-2 number, since 2×506664164525² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506664164527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2671697 + ... + 2855046.

It is an arithmetic number, because the mean of its divisors is an integer number (27698198680).

Almost surely, 2^506664164525 is an apocalyptic number.

It is an amenable number.

506664164525 is a deficient number, since it is larger than the sum of its proper divisors (158092603795).

506664164525 is a wasteful number, since it uses less digits than its factorization.

506664164525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526965 (or 5526960 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 506664164525 in words is "five hundred six billion, six hundred sixty-four million, one hundred sixty-four thousand, five hundred twenty-five".