1056665217053 has 2 divisors, whose sum is σ = 1056665217054. Its totient is φ = 1056665217052.

The previous prime is 1056665216989. The next prime is 1056665217059. The reversal of 1056665217053 is 3507125666501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 878685013924 + 177980203129 = 937382^2 + 421877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056665217053 - 2⁶ = 1056665216989 is a prime.

It is a super-2 number, since 2×1056665217053² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056665216989 and 1056665217007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056665217059) 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, 528332608526 + 528332608527.

It is an arithmetic number, because the mean of its divisors is an integer number (528332608527).

Almost surely, 2^{1056665217053} is an apocalyptic number.

It is an amenable number.

1056665217053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056665217053 is an equidigital number, since it uses as much as digits as its factorization.

1056665217053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 1056665217053 in words is "one trillion, fifty-six billion, six hundred sixty-five million, two hundred seventeen thousand, fifty-three".