56540785641 has 16 divisors (see below), whose sum is σ = 78981070848. Its totient is φ = 35933475600.

The previous prime is 56540785601. The next prime is 56540785643. The reversal of 56540785641 is 14658704565.

It is a happy number.

It is not a de Polignac number, because 56540785641 - 2⁶ = 56540785577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56540785643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4530825 + ... + 4543286.

It is an arithmetic number, because the mean of its divisors is an integer number (4936316928).

Almost surely, 2^56540785641 is an apocalyptic number.

It is an amenable number.

56540785641 is a deficient number, since it is larger than the sum of its proper divisors (22440285207).

56540785641 is a wasteful number, since it uses less digits than its factorization.

56540785641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9074212.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 56540785641 in words is "fifty-six billion, five hundred forty million, seven hundred eighty-five thousand, six hundred forty-one".