56561743768 has 8 divisors (see below), whose sum is σ = 106053269580. Its totient is φ = 28280871880.

The previous prime is 56561743741. The next prime is 56561743787. The reversal of 56561743768 is 86734716565.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535108978 + ... + 3535108993.

Almost surely, 2^56561743768 is an apocalyptic number.

It is an amenable number.

56561743768 is a deficient number, since it is larger than the sum of its proper divisors (49491525812).

56561743768 is a wasteful number, since it uses less digits than its factorization.

56561743768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070217977 (or 7070217973 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 58.

The spelling of 56561743768 in words is "fifty-six billion, five hundred sixty-one million, seven hundred forty-three thousand, seven hundred sixty-eight".