56283138661 has 4 divisors (see below), whose sum is σ = 56351032300. Its totient is φ = 56215245024.

The previous prime is 56283138641. The next prime is 56283138719. The reversal of 56283138661 is 16683138265.

56283138661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17369658436 + 38913480225 = 131794^2 + 197265^2 .

It is a cyclic number.

It is not a de Polignac number, because 56283138661 - 2¹³ = 56283130469 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 (56283138601) 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, 33945576 + ... + 33947233.

It is an arithmetic number, because the mean of its divisors is an integer number (14087758075).

Almost surely, 2^56283138661 is an apocalyptic number.

It is an amenable number.

56283138661 is a deficient number, since it is larger than the sum of its proper divisors (67893639).

56283138661 is an equidigital number, since it uses as much as digits as its factorization.

56283138661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67893638.

The product of its digits is 1244160, while the sum is 49.

The spelling of 56283138661 in words is "fifty-six billion, two hundred eighty-three million, one hundred thirty-eight thousand, six hundred sixty-one".