10643368958881 has 16 divisors (see below), whose sum is σ = 11317924682064. Its totient is φ = 9974249201664.

The previous prime is 10643368958857. The next prime is 10643368958927. The reversal of 10643368958881 is 18885986334601.

It can be written as a sum of positive squares in 8 ways, for example, as 1442557134225 + 9200811824656 = 1201065^2 + 3033284^2 .

It is a cyclic number.

It is not a de Polignac number, because 10643368958881 - 2¹⁹ = 10643368434593 is a prime.

It is a super-2 number, since 2×10643368958881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10643368958881.

It is not an unprimeable number, because it can be changed into a prime (10643368958821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6064401 + ... + 7619953.

It is an arithmetic number, because the mean of its divisors is an integer number (707370292629).

Almost surely, 2^{10643368958881} is an apocalyptic number.

It is an amenable number.

10643368958881 is a deficient number, since it is larger than the sum of its proper divisors (674555723183).

10643368958881 is a wasteful number, since it uses less digits than its factorization.

10643368958881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557300.

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 10643368958881 in words is "ten trillion, six hundred forty-three billion, three hundred sixty-eight million, nine hundred fifty-eight thousand, eight hundred eighty-one".