42819819909 has 8 divisors (see below), whose sum is σ = 57412049760. Its totient is φ = 28387068336.

The previous prime is 42819819893. The next prime is 42819819919. The reversal of 42819819909 is 90991891824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42819819909 - 2⁴ = 42819819893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42819819919) 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, 39868942 + ... + 39870015.

It is an arithmetic number, because the mean of its divisors is an integer number (7176506220).

Almost surely, 2^42819819909 is an apocalyptic number.

It is an amenable number.

42819819909 is a deficient number, since it is larger than the sum of its proper divisors (14592229851).

42819819909 is a wasteful number, since it uses less digits than its factorization.

42819819909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79739139.

The product of its (nonzero) digits is 3359232, while the sum is 60.

The spelling of 42819819909 in words is "forty-two billion, eight hundred nineteen million, eight hundred nineteen thousand, nine hundred nine".