42568648091 has 16 divisors (see below), whose sum is σ = 45344759040. Its totient is φ = 39823441920.

The previous prime is 42568648061. The next prime is 42568648103. The reversal of 42568648091 is 19084686524.

It is a cyclic number.

It is not a de Polignac number, because 42568648091 - 2⁶ = 42568648027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42568648061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082581 + ... + 2102921.

It is an arithmetic number, because the mean of its divisors is an integer number (2834047440).

Almost surely, 2^42568648091 is an apocalyptic number.

42568648091 is a deficient number, since it is larger than the sum of its proper divisors (2776110949).

42568648091 is a wasteful number, since it uses less digits than its factorization.

42568648091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21094.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 42568648091 in words is "forty-two billion, five hundred sixty-eight million, six hundred forty-eight thousand, ninety-one".