56624242561 has 2 divisors, whose sum is σ = 56624242562. Its totient is φ = 56624242560.

The previous prime is 56624242559. The next prime is 56624242613. The reversal of 56624242561 is 16524242665.

It is a happy number.

56624242561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56468492161 + 155750400 = 237631^2 + 12480^2 .

It is a cyclic number.

It is not a de Polignac number, because 56624242561 - 2¹ = 56624242559 is a prime.

Together with 56624242559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56624242511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28312121280 + 28312121281.

It is an arithmetic number, because the mean of its divisors is an integer number (28312121281).

Almost surely, 2^56624242561 is an apocalyptic number.

It is an amenable number.

56624242561 is a deficient number, since it is larger than the sum of its proper divisors (1).

56624242561 is an equidigital number, since it uses as much as digits as its factorization.

56624242561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 43.

The spelling of 56624242561 in words is "fifty-six billion, six hundred twenty-four million, two hundred forty-two thousand, five hundred sixty-one".