56174143661 has 8 divisors (see below), whose sum is σ = 57120203448. Its totient is φ = 55228896000.

The previous prime is 56174143643. The next prime is 56174143693. The reversal of 56174143661 is 16634147165.

It is a happy number.

56174143661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5355458761 + 50818684900 = 73181^2 + 225430^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56174143661 - 2²² = 56169949357 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 (56174143621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62720 + ... + 341001.

It is an arithmetic number, because the mean of its divisors is an integer number (7140025431).

Almost surely, 2^56174143661 is an apocalyptic number.

It is an amenable number.

56174143661 is a deficient number, since it is larger than the sum of its proper divisors (946059787).

56174143661 is a wasteful number, since it uses less digits than its factorization.

56174143661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406063.

The product of its digits is 362880, while the sum is 44.

The spelling of 56174143661 in words is "fifty-six billion, one hundred seventy-four million, one hundred forty-three thousand, six hundred sixty-one".