1056440675889 has 27 divisors (see below), whose sum is σ = 1531598034603. Its totient is φ = 701705700432.

The previous prime is 1056440675887. The next prime is 1056440675897. The reversal of 1056440675889 is 9885760446501.

The square root of 1056440675889 is 1027833.

It is a perfect power (a square), and thus also a powerful number.

1056440675889 is a `hidden beast` number, since 1 + 0 + 5 + 6 + 4 + 40 + 6 + 7 + 588 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 707996030625 + 348444645264 = 841425^2 + 590292^2 .

It is not a de Polignac number, because 1056440675889 - 2¹ = 1056440675887 is a prime.

It is a super-2 number, since 2×1056440675889² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056440675887) 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 in 26 ways as a sum of consecutive naturals, for example, 1224148672 + ... + 1224149534.

Almost surely, 2^{1056440675889} is an apocalyptic number.

1056440675889 is the 1027833-rd square number.

1056440675889 is the 513917-th centered octagonal number.

It is an amenable number.

1056440675889 is a deficient number, since it is larger than the sum of its proper divisors (475157358714).

1056440675889 is an frugal number, since it uses more digits than its factorization.

1056440675889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 1056440675889 in words is "one trillion, fifty-six billion, four hundred forty million, six hundred seventy-five thousand, eight hundred eighty-nine".