56071668517 has 4 divisors (see below), whose sum is σ = 57022035840. Its totient is φ = 55121301196.

The previous prime is 56071668451. The next prime is 56071668529. The reversal of 56071668517 is 71586617065.

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 56071668517 - 2¹⁹ = 56071144229 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 (56071668547) 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, 475183573 + ... + 475183690.

It is an arithmetic number, because the mean of its divisors is an integer number (14255508960).

Almost surely, 2^56071668517 is an apocalyptic number.

It is an amenable number.

56071668517 is a deficient number, since it is larger than the sum of its proper divisors (950367323).

56071668517 is an equidigital number, since it uses as much as digits as its factorization.

56071668517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950367322.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 56071668517 in words is "fifty-six billion, seventy-one million, six hundred sixty-eight thousand, five hundred seventeen".