56604306345721 has 16 divisors (see below), whose sum is σ = 58728768215040. Its totient is φ = 54498519915840.

The previous prime is 56604306345677. The next prime is 56604306345809. The reversal of 56604306345721 is 12754360340665.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56604306345721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56604306343721) 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, 211211035 + ... + 211478863.

It is an arithmetic number, because the mean of its divisors is an integer number (3670548013440).

Almost surely, 2^{56604306345721} is an apocalyptic number.

It is an amenable number.

56604306345721 is a deficient number, since it is larger than the sum of its proper divisors (2124461869319).

56604306345721 is a wasteful number, since it uses less digits than its factorization.

56604306345721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302664.

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 56604306345721 in words is "fifty-six trillion, six hundred four billion, three hundred six million, three hundred forty-five thousand, seven hundred twenty-one".