42947859422217 has 8 divisors (see below), whose sum is σ = 57770571966624. Its totient is φ = 28378526579648.

The previous prime is 42947859422183. The next prime is 42947859422233. The reversal of 42947859422217 is 71222495874924.

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 42947859422217 - 2²² = 42947855227913 is a prime.

It is a super-3 number, since 3×42947859422217³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42947859422267) 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, 63344925063 + ... + 63344925740.

It is an arithmetic number, because the mean of its divisors is an integer number (7221321495828).

Almost surely, 2^{42947859422217} is an apocalyptic number.

It is an amenable number.

42947859422217 is a deficient number, since it is larger than the sum of its proper divisors (14822712544407).

42947859422217 is a wasteful number, since it uses less digits than its factorization.

42947859422217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126689850919.

The product of its digits is 162570240, while the sum is 66.

The spelling of 42947859422217 in words is "forty-two trillion, nine hundred forty-seven billion, eight hundred fifty-nine million, four hundred twenty-two thousand, two hundred seventeen".