5656643506237 has 4 divisors (see below), whose sum is σ = 5989387241916. Its totient is φ = 5323899770560.

The previous prime is 5656643506211. The next prime is 5656643506277. The reversal of 5656643506237 is 7326053466565.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4116398689881 + 1540244816356 = 2028891^2 + 1241066^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656643506237 - 2²³ = 5656635117629 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656643506277) 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, 166371867814 + ... + 166371867847.

It is an arithmetic number, because the mean of its divisors is an integer number (1497346810479).

Almost surely, 2^{5656643506237} is an apocalyptic number.

It is an amenable number.

5656643506237 is a deficient number, since it is larger than the sum of its proper divisors (332743735679).

5656643506237 is a wasteful number, since it uses less digits than its factorization.

5656643506237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332743735678.

The product of its (nonzero) digits is 81648000, while the sum is 58.

The spelling of 5656643506237 in words is "five trillion, six hundred fifty-six billion, six hundred forty-three million, five hundred six thousand, two hundred thirty-seven".