11026640458681 has 8 divisors (see below), whose sum is σ = 11177758384520. Its totient is φ = 10875524372352.

The previous prime is 11026640458633. The next prime is 11026640458693. The reversal of 11026640458681 is 18685404662011.

It can be written as a sum of positive squares in 4 ways, for example, as 7301257943056 + 3725382515625 = 2702084^2 + 1930125^2 .

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 11026640458681 - 2⁷ = 11026640458553 is a prime.

It is a super-2 number, since 2×11026640458681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11026644458681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15274231 + ... + 15979843.

It is an arithmetic number, because the mean of its divisors is an integer number (1397219798065).

Almost surely, 2^{11026640458681} is an apocalyptic number.

It is an amenable number.

11026640458681 is a deficient number, since it is larger than the sum of its proper divisors (151117925839).

11026640458681 is an equidigital number, since it uses as much as digits as its factorization.

11026640458681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919755.

The product of its (nonzero) digits is 2211840, while the sum is 52.

It can be divided in two parts, 11026640 and 458681, that added together give a square (11485321 = 3389²).

The spelling of 11026640458681 in words is "eleven trillion, twenty-six billion, six hundred forty million, four hundred fifty-eight thousand, six hundred eighty-one".