1056635512523 has 8 divisors (see below), whose sum is σ = 1091586908160. Its totient is φ = 1021738265640.

The previous prime is 1056635512477. The next prime is 1056635512531. The reversal of 1056635512523 is 3252155366501.

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

It is a cyclic number.

It is not a de Polignac number, because 1056635512523 - 2¹⁸ = 1056635250379 is a prime.

It is a super-2 number, since 2×1056635512523² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056635512573) 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, 13497515 + ... + 13575572.

It is an arithmetic number, because the mean of its divisors is an integer number (136448363520).

Almost surely, 2^{1056635512523} is an apocalyptic number.

1056635512523 is a deficient number, since it is larger than the sum of its proper divisors (34951395637).

1056635512523 is a wasteful number, since it uses less digits than its factorization.

1056635512523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27074377.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 1056635512523 in words is "one trillion, fifty-six billion, six hundred thirty-five million, five hundred twelve thousand, five hundred twenty-three".