56561847611 has 8 divisors (see below), whose sum is σ = 57362766048. Its totient is φ = 55761048000.

The previous prime is 56561847581. The next prime is 56561847659. The reversal of 56561847611 is 11674816565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56561847611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56561847611.

It is not an unprimeable number, because it can be changed into a prime (56561847011) 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, 1437581 + ... + 1476401.

It is an arithmetic number, because the mean of its divisors is an integer number (7170345756).

Almost surely, 2^56561847611 is an apocalyptic number.

56561847611 is a deficient number, since it is larger than the sum of its proper divisors (800918437).

56561847611 is a wasteful number, since it uses less digits than its factorization.

56561847611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59413.

The product of its digits is 1209600, while the sum is 50.

The spelling of 56561847611 in words is "fifty-six billion, five hundred sixty-one million, eight hundred forty-seven thousand, six hundred eleven".