1056634507959 has 8 divisors (see below), whose sum is σ = 1408892058480. Its totient is φ = 704399981376.

The previous prime is 1056634507921. The next prime is 1056634507979. The reversal of 1056634507959 is 9597054366501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1056634507959 - 2³⁹ = 506878694071 is a prime.

It is a super-2 number, since 2×1056634507959² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056634507909) 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 in 7 ways as a sum of consecutive naturals, for example, 5648614 + ... + 5832675.

It is an arithmetic number, because the mean of its divisors is an integer number (176111507310).

Almost surely, 2^{1056634507959} is an apocalyptic number.

1056634507959 is a deficient number, since it is larger than the sum of its proper divisors (352257550521).

1056634507959 is a wasteful number, since it uses less digits than its factorization.

1056634507959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511969.

The product of its (nonzero) digits is 30618000, while the sum is 60.

The spelling of 1056634507959 in words is "one trillion, fifty-six billion, six hundred thirty-four million, five hundred seven thousand, nine hundred fifty-nine".