56217020747 has 2 divisors, whose sum is σ = 56217020748. Its totient is φ = 56217020746.

The previous prime is 56217020701. The next prime is 56217020771. The reversal of 56217020747 is 74702071265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56217020747 - 2¹² = 56217016651 is a prime.

It is not a weakly prime, because it can be changed into another prime (56217020147) 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 as a sum of consecutive naturals, namely, 28108510373 + 28108510374.

It is an arithmetic number, because the mean of its divisors is an integer number (28108510374).

Almost surely, 2^56217020747 is an apocalyptic number.

56217020747 is a deficient number, since it is larger than the sum of its proper divisors (1).

56217020747 is an equidigital number, since it uses as much as digits as its factorization.

56217020747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 56217020747 in words is "fifty-six billion, two hundred seventeen million, twenty thousand, seven hundred forty-seven".