66908341947 has 8 divisors (see below), whose sum is σ = 90213495120. Its totient is φ = 44104375040.

The previous prime is 66908341943. The next prime is 66908341961. The reversal of 66908341947 is 74914380966.

66908341947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66908341947 - 2² = 66908341943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66908341943) 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, 125296254 + ... + 125296787.

It is an arithmetic number, because the mean of its divisors is an integer number (11276686890).

Almost surely, 2^66908341947 is an apocalyptic number.

66908341947 is a deficient number, since it is larger than the sum of its proper divisors (23305153173).

66908341947 is a wasteful number, since it uses less digits than its factorization.

66908341947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250593133.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 66908341947 in words is "sixty-six billion, nine hundred eight million, three hundred forty-one thousand, nine hundred forty-seven".