667634364232152 has 32 divisors (see below), whose sum is σ = 1709795323036080. Its totient is φ = 217116866416640.

The previous prime is 667634364232109. The next prime is 667634364232163. The reversal of 667634364232152 is 251232463436766.

It is a super-2 number, since 2×667634364232152² (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 (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339245102793 + ... + 339245104760.

Almost surely, 2^{667634364232152} is an apocalyptic number.

It is an amenable number.

667634364232152 is an abundant number, since it is smaller than the sum of its proper divisors (1042160958803928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667634364232152 is a wasteful number, since it uses less digits than its factorization.

667634364232152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678490207603 (or 678490207599 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 60.

The spelling of 667634364232152 in words is "six hundred sixty-seven trillion, six hundred thirty-four billion, three hundred sixty-four million, two hundred thirty-two thousand, one hundred fifty-two".