1056639176657 has 2 divisors, whose sum is σ = 1056639176658. Its totient is φ = 1056639176656.

The previous prime is 1056639176627. The next prime is 1056639176689. The reversal of 1056639176657 is 7566719366501.

1056639176657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664022895376 + 392616281281 = 814876^2 + 626591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056639176657 - 2³² = 1052344209361 is a prime.

It is a super-2 number, since 2×1056639176657² (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 1056639176657.

It is not a weakly prime, because it can be changed into another prime (1056639176627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528319588328 + 528319588329.

It is an arithmetic number, because the mean of its divisors is an integer number (528319588329).

Almost surely, 2^{1056639176657} is an apocalyptic number.

It is an amenable number.

1056639176657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056639176657 is an equidigital number, since it uses as much as digits as its factorization.

1056639176657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 1056639176657 in words is "one trillion, fifty-six billion, six hundred thirty-nine million, one hundred seventy-six thousand, six hundred fifty-seven".