42670656217 has 8 divisors (see below), whose sum is σ = 51635079936. Its totient is φ = 34423386432.

The previous prime is 42670656191. The next prime is 42670656239. The reversal of 42670656217 is 71265607624.

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 42670656217 - 2¹⁵ = 42670623449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42670656257) 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, 179288353 + ... + 179288590.

It is an arithmetic number, because the mean of its divisors is an integer number (6454384992).

Almost surely, 2^42670656217 is an apocalyptic number.

It is an amenable number.

42670656217 is a deficient number, since it is larger than the sum of its proper divisors (8964423719).

42670656217 is a wasteful number, since it uses less digits than its factorization.

42670656217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358576967.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 42670656217 in words is "forty-two billion, six hundred seventy million, six hundred fifty-six thousand, two hundred seventeen".