42221566345 has 16 divisors (see below), whose sum is σ = 57909398400. Its totient is φ = 28949163264.

The previous prime is 42221566327. The next prime is 42221566351. The reversal of 42221566345 is 54366512224.

It is a happy number.

It is not a de Polignac number, because 42221566345 - 2⁹ = 42221565833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42221566298 and 42221566307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355306 + ... + 459004.

It is an arithmetic number, because the mean of its divisors is an integer number (3619337400).

Almost surely, 2^42221566345 is an apocalyptic number.

It is an amenable number.

42221566345 is a deficient number, since it is larger than the sum of its proper divisors (15687832055).

42221566345 is a wasteful number, since it uses less digits than its factorization.

42221566345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115344.

The product of its digits is 345600, while the sum is 40.

The spelling of 42221566345 in words is "forty-two billion, two hundred twenty-one million, five hundred sixty-six thousand, three hundred forty-five".