42643617417 has 6 divisors (see below), whose sum is σ = 61596336282. Its totient is φ = 28429078272.

The previous prime is 42643617403. The next prime is 42643617421. The reversal of 42643617417 is 71471634624.

42643617417 is a `hidden beast` number, since 4 + 26 + 4 + 3 + 617 + 4 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24553636416 + 18089981001 = 156696^2 + 134499^2 .

It is not a de Polignac number, because 42643617417 - 2⁶ = 42643617353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42643617427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2369089848 + ... + 2369089865.

It is an arithmetic number, because the mean of its divisors is an integer number (10266056047).

Almost surely, 2^42643617417 is an apocalyptic number.

It is an amenable number.

42643617417 is a deficient number, since it is larger than the sum of its proper divisors (18952718865).

42643617417 is a wasteful number, since it uses less digits than its factorization.

42643617417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738179719 (or 4738179716 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The spelling of 42643617417 in words is "forty-two billion, six hundred forty-three million, six hundred seventeen thousand, four hundred seventeen".