66908341946 has 32 divisors (see below), whose sum is σ = 103206026880. Its totient is φ = 32520898816.

The previous prime is 66908341943. The next prime is 66908341961. The reversal of 66908341946 is 64914380966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66908341891 and 66908341900.

It is not an unprimeable number, because it can be changed into a prime (66908341943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4243790 + ... + 4259526.

It is an arithmetic number, because the mean of its divisors is an integer number (3225188340).

Almost surely, 2^66908341946 is an apocalyptic number.

66908341946 is a deficient number, since it is larger than the sum of its proper divisors (36297684934).

66908341946 is a wasteful number, since it uses less digits than its factorization.

66908341946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16198.

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 66908341946 in words is "sixty-six billion, nine hundred eight million, three hundred forty-one thousand, nine hundred forty-six".