1056305422681 has 4 divisors (see below), whose sum is σ = 1070775360052. Its totient is φ = 1041835485312.

The previous prime is 1056305422661. The next prime is 1056305422699. The reversal of 1056305422681 is 1862245036501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 910991982681 + 145313440000 = 954459^2 + 381200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056305422681 - 2¹⁷ = 1056305291609 is a prime.

It is a super-3 number, since 3×1056305422681³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056305422621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7234968576 + ... + 7234968721.

It is an arithmetic number, because the mean of its divisors is an integer number (267693840013).

Almost surely, 2^{1056305422681} is an apocalyptic number.

It is an amenable number.

1056305422681 is a deficient number, since it is larger than the sum of its proper divisors (14469937371).

1056305422681 is an equidigital number, since it uses as much as digits as its factorization.

1056305422681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14469937370.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 1056305422681 in words is "one trillion, fifty-six billion, three hundred five million, four hundred twenty-two thousand, six hundred eighty-one".