1056506566667 has 2 divisors, whose sum is σ = 1056506566668. Its totient is φ = 1056506566666.

The previous prime is 1056506566601. The next prime is 1056506566669. The reversal of 1056506566667 is 7666656056501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1056506566667 - 2²⁶ = 1056439457803 is a prime.

It is a super-2 number, since 2×1056506566667² (a number of 25 digits) contains 22 as substring.

Together with 1056506566669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1056506566669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528253283333 + 528253283334.

It is an arithmetic number, because the mean of its divisors is an integer number (528253283334).

Almost surely, 2^{1056506566667} is an apocalyptic number.

1056506566667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056506566667 is an equidigital number, since it uses as much as digits as its factorization.

1056506566667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824000, while the sum is 59.

The spelling of 1056506566667 in words is "one trillion, fifty-six billion, five hundred six million, five hundred sixty-six thousand, six hundred sixty-seven".