2656442013 has 4 divisors (see below), whose sum is σ = 3541922688. Its totient is φ = 1770961340.

The previous prime is 2656441979. The next prime is 2656442051. The reversal of 2656442013 is 3102446562.

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 a cyclic number.

It is not a de Polignac number, because 2656442013 - 2¹⁰ = 2656440989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656442093) 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 3 ways as a sum of consecutive naturals, for example, 442740333 + ... + 442740338.

It is an arithmetic number, because the mean of its divisors is an integer number (885480672).

Almost surely, 2^2656442013 is an apocalyptic number.

It is an amenable number.

2656442013 is a deficient number, since it is larger than the sum of its proper divisors (885480675).

2656442013 is an equidigital number, since it uses as much as digits as its factorization.

2656442013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885480674.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2656442013 is about 51540.6830862766. The cubic root of 2656442013 is about 1384.9479339383.

Adding to 2656442013 its reverse (3102446562), we get a palindrome (5758888575).

The spelling of 2656442013 in words is "two billion, six hundred fifty-six million, four hundred forty-two thousand, thirteen".