66696829552 has 10 divisors (see below), whose sum is σ = 129225107288. Its totient is φ = 33348414768.

The previous prime is 66696829543. The next prime is 66696829567. The reversal of 66696829552 is 25592869666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2084275908 + ... + 2084275939.

Almost surely, 2^66696829552 is an apocalyptic number.

It is an amenable number.

66696829552 is a deficient number, since it is larger than the sum of its proper divisors (62528277736).

66696829552 is a wasteful number, since it uses less digits than its factorization.

66696829552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168551855 (or 4168551849 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 64.

The spelling of 66696829552 in words is "sixty-six billion, six hundred ninety-six million, eight hundred twenty-nine thousand, five hundred fifty-two".