56553966947 has 2 divisors, whose sum is σ = 56553966948. Its totient is φ = 56553966946.

The previous prime is 56553966913. The next prime is 56553966991. The reversal of 56553966947 is 74966935565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56553966947 - 2¹² = 56553962851 is a prime.

It is not a weakly prime, because it can be changed into another prime (56553966907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28276983473 + 28276983474.

It is an arithmetic number, because the mean of its divisors is an integer number (28276983474).

Almost surely, 2^56553966947 is an apocalyptic number.

56553966947 is a deficient number, since it is larger than the sum of its proper divisors (1).

56553966947 is an equidigital number, since it uses as much as digits as its factorization.

56553966947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708000, while the sum is 65.

The spelling of 56553966947 in words is "fifty-six billion, five hundred fifty-three million, nine hundred sixty-six thousand, nine hundred forty-seven".