42191899167 has 32 divisors (see below), whose sum is σ = 62750638080. Its totient is φ = 25001889120.

The previous prime is 42191899153. The next prime is 42191899199. The reversal of 42191899167 is 76199819124.

It is not a de Polignac number, because 42191899167 - 2¹¹ = 42191897119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42191899147) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 189958 + ... + 347084.

It is an arithmetic number, because the mean of its divisors is an integer number (1960957440).

Almost surely, 2^42191899167 is an apocalyptic number.

42191899167 is a deficient number, since it is larger than the sum of its proper divisors (20558738913).

42191899167 is a wasteful number, since it uses less digits than its factorization.

42191899167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157323.

The product of its digits is 1959552, while the sum is 57.

The spelling of 42191899167 in words is "forty-two billion, one hundred ninety-one million, eight hundred ninety-nine thousand, one hundred sixty-seven".