56066111731 has 4 divisors (see below), whose sum is σ = 64075556272. Its totient is φ = 48056667192.

The previous prime is 56066111693. The next prime is 56066111747. The reversal of 56066111731 is 13711166065.

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 56066111731 - 2⁹ = 56066111219 is a prime.

It is a super-2 number, since 2×56066111731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56066111131) 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, 4004722260 + ... + 4004722273.

It is an arithmetic number, because the mean of its divisors is an integer number (16018889068).

Almost surely, 2^56066111731 is an apocalyptic number.

56066111731 is a deficient number, since it is larger than the sum of its proper divisors (8009444541).

56066111731 is an equidigital number, since it uses as much as digits as its factorization.

56066111731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8009444540.

The product of its (nonzero) digits is 22680, while the sum is 37.

Adding to 56066111731 its reverse (13711166065), we get a palindrome (69777277796).

The spelling of 56066111731 in words is "fifty-six billion, sixty-six million, one hundred eleven thousand, seven hundred thirty-one".