42796066809 has 4 divisors (see below), whose sum is σ = 57061422416. Its totient is φ = 28530711204.

The previous prime is 42796066777. The next prime is 42796066837. The reversal of 42796066809 is 90866069724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42796066809 - 2⁵ = 42796066777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42796066879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132677799 + ... + 7132677804.

It is an arithmetic number, because the mean of its divisors is an integer number (14265355604).

Almost surely, 2^42796066809 is an apocalyptic number.

It is an amenable number.

42796066809 is a deficient number, since it is larger than the sum of its proper divisors (14265355607).

42796066809 is a wasteful number, since it uses less digits than its factorization.

42796066809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14265355606.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 42796066809 in words is "forty-two billion, seven hundred ninety-six million, sixty-six thousand, eight hundred nine".