66810073468 has 24 divisors (see below), whose sum is σ = 118775702864. Its totient is φ = 32877964800.

The previous prime is 66810073453. The next prime is 66810073471. The reversal of 66810073468 is 86437001866.

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 in 7 ways as a sum of consecutive naturals, for example, 405438 + ... + 545893.

Almost surely, 2^66810073468 is an apocalyptic number.

It is an amenable number.

66810073468 is a deficient number, since it is larger than the sum of its proper divisors (51965629396).

66810073468 is a wasteful number, since it uses less digits than its factorization.

66810073468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951613 (or 951611 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 66810073468 in words is "sixty-six billion, eight hundred ten million, seventy-three thousand, four hundred sixty-eight".