56561570547 has 8 divisors (see below), whose sum is σ = 75503225280. Its totient is φ = 37663814760.

The previous prime is 56561570543. The next prime is 56561570557. The reversal of 56561570547 is 74507516565.

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

It is not a de Polignac number, because 56561570547 - 2² = 56561570543 is a prime.

It is a super-2 number, since 2×56561570547² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56561570547.

It is not an unprimeable number, because it can be changed into a prime (56561570543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10971729 + ... + 10976882.

It is an arithmetic number, because the mean of its divisors is an integer number (9437903160).

Almost surely, 2^56561570547 is an apocalyptic number.

56561570547 is a deficient number, since it is larger than the sum of its proper divisors (18941654733).

56561570547 is a wasteful number, since it uses less digits than its factorization.

56561570547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21949473.

The product of its (nonzero) digits is 4410000, while the sum is 51.

The spelling of 56561570547 in words is "fifty-six billion, five hundred sixty-one million, five hundred seventy thousand, five hundred forty-seven".