66908558463 has 8 divisors (see below), whose sum is σ = 93906748800. Its totient is φ = 42258036888.

The previous prime is 66908558449. The next prime is 66908558471. The reversal of 66908558463 is 36485580966.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66908558463 - 2⁴ = 66908558447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66908558397 and 66908558406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66908558413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586917123 + ... + 586917236.

It is an arithmetic number, because the mean of its divisors is an integer number (11738343600).

Almost surely, 2^66908558463 is an apocalyptic number.

66908558463 is a deficient number, since it is larger than the sum of its proper divisors (26998190337).

66908558463 is a wasteful number, since it uses less digits than its factorization.

66908558463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173834381.

The product of its (nonzero) digits is 37324800, while the sum is 60.

The spelling of 66908558463 in words is "sixty-six billion, nine hundred eight million, five hundred fifty-eight thousand, four hundred sixty-three".