1056665217059 has 2 divisors, whose sum is σ = 1056665217060. Its totient is φ = 1056665217058.

The previous prime is 1056665217053. The next prime is 1056665217073. The reversal of 1056665217059 is 9507125666501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1056665217059 - 2³⁶ = 987945740323 is a prime.

It is a super-2 number, since 2×1056665217059² (a number of 25 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 1056665217059.

It is not a weakly prime, because it can be changed into another prime (1056665217053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528332608529 + 528332608530.

It is an arithmetic number, because the mean of its divisors is an integer number (528332608530).

Almost surely, 2^{1056665217059} is an apocalyptic number.

1056665217059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056665217059 is an equidigital number, since it uses as much as digits as its factorization.

1056665217059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 1056665217059 in words is "one trillion, fifty-six billion, six hundred sixty-five million, two hundred seventeen thousand, fifty-nine".