666252424132534 has 64 divisors (see below), whose sum is σ = 1009716461568000. Its totient is φ = 329702385561120.

The previous prime is 666252424132417. The next prime is 666252424132549. The reversal of 666252424132534 is 435231424252666.

It is a super-2 number, since 2×666252424132534² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169486750549 + ... + 169486754479.

It is an arithmetic number, because the mean of its divisors is an integer number (15776819712000).

Almost surely, 2^{666252424132534} is an apocalyptic number.

666252424132534 is a deficient number, since it is larger than the sum of its proper divisors (343464037435466).

666252424132534 is a wasteful number, since it uses less digits than its factorization.

666252424132534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6793.

The product of its digits is 49766400, while the sum is 55.

The spelling of 666252424132534 in words is "six hundred sixty-six trillion, two hundred fifty-two billion, four hundred twenty-four million, one hundred thirty-two thousand, five hundred thirty-four".