66885700023 has 20 divisors (see below), whose sum is σ = 101322947088. Its totient is φ = 43962428160.

The previous prime is 66885699973. The next prime is 66885700027. The reversal of 66885700023 is 32000758866.

It is not a de Polignac number, because 66885700023 - 2⁹ = 66885699511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66885700027) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5809386 + ... + 5820887.

Almost surely, 2^66885700023 is an apocalyptic number.

66885700023 is a deficient number, since it is larger than the sum of its proper divisors (34437247065).

66885700023 is a wasteful number, since it uses less digits than its factorization.

66885700023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630356 (or 11630347 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 66885700023 in words is "sixty-six billion, eight hundred eighty-five million, seven hundred thousand, twenty-three".