42565590899 has 4 divisors (see below), whose sum is σ = 45839867136. Its totient is φ = 39291314664.

The previous prime is 42565590889. The next prime is 42565590917. The reversal of 42565590899 is 99809556524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42565590899 - 2⁸ = 42565590643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42565590889) 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, 1637138099 + ... + 1637138124.

It is an arithmetic number, because the mean of its divisors is an integer number (11459966784).

Almost surely, 2^42565590899 is an apocalyptic number.

42565590899 is a deficient number, since it is larger than the sum of its proper divisors (3274276237).

42565590899 is a wasteful number, since it uses less digits than its factorization.

42565590899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274276236.

The product of its (nonzero) digits is 34992000, while the sum is 62.

The spelling of 42565590899 in words is "forty-two billion, five hundred sixty-five million, five hundred ninety thousand, eight hundred ninety-nine".