56005040647 has 4 divisors (see below), whose sum is σ = 56008107576. Its totient is φ = 56001973720.

The previous prime is 56005040569. The next prime is 56005040711. The reversal of 56005040647 is 74604050065.

It is a happy number.

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 56005040647 - 2¹¹ = 56005038599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56005040347) 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, 1505908 + ... + 1542649.

It is an arithmetic number, because the mean of its divisors is an integer number (14002026894).

Almost surely, 2^56005040647 is an apocalyptic number.

56005040647 is a deficient number, since it is larger than the sum of its proper divisors (3066929).

56005040647 is a wasteful number, since it uses less digits than its factorization.

56005040647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066928.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 56005040647 in words is "fifty-six billion, five million, forty thousand, six hundred forty-seven".