1056105960591 has 16 divisors (see below), whose sum is σ = 1536277881600. Its totient is φ = 640012653120.

The previous prime is 1056105960563. The next prime is 1056105960641. The reversal of 1056105960591 is 1950695016501.

It is not a de Polignac number, because 1056105960591 - 2¹¹ = 1056105958543 is a prime.

It is a super-2 number, since 2×1056105960591² (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 1056105960591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056105960551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871291 + ... + 1694508.

It is an arithmetic number, because the mean of its divisors is an integer number (96017367600).

Almost surely, 2^{1056105960591} is an apocalyptic number.

1056105960591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1056105960591 is a deficient number, since it is larger than the sum of its proper divisors (480171921009).

1056105960591 is a wasteful number, since it uses less digits than its factorization.

1056105960591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578286.

The product of its (nonzero) digits is 364500, while the sum is 48.

The spelling of 1056105960591 in words is "one trillion, fifty-six billion, one hundred five million, nine hundred sixty thousand, five hundred ninety-one".