42550055217 has 16 divisors (see below), whose sum is σ = 63977974080. Its totient is φ = 27943318656.

The previous prime is 42550055189. The next prime is 42550055239. The reversal of 42550055217 is 71255005524.

42550055217 is a `hidden beast` number, since 42 + 5 + 50 + 0 + 552 + 17 = 666.

It is not a de Polignac number, because 42550055217 - 2⁸ = 42550054961 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42550055297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11758848 + ... + 11762465.

It is an arithmetic number, because the mean of its divisors is an integer number (3998623380).

Almost surely, 2^42550055217 is an apocalyptic number.

It is an amenable number.

42550055217 is a deficient number, since it is larger than the sum of its proper divisors (21427918863).

42550055217 is a wasteful number, since it uses less digits than its factorization.

42550055217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23521389 (or 23521383 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The spelling of 42550055217 in words is "forty-two billion, five hundred fifty million, fifty-five thousand, two hundred seventeen".