10818609643 has 2 divisors, whose sum is σ = 10818609644. Its totient is φ = 10818609642.

The previous prime is 10818609631. The next prime is 10818609649. The reversal of 10818609643 is 34690681801.

It is a strong prime.

It is an emirp because it is prime and its reverse (34690681801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10818609643 is a prime.

It is a super-2 number, since 2×10818609643² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10818609593 and 10818609602.

It is not a weakly prime, because it can be changed into another prime (10818609649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5409304821 + 5409304822.

It is an arithmetic number, because the mean of its divisors is an integer number (5409304822).

Almost surely, 2^10818609643 is an apocalyptic number.

10818609643 is a deficient number, since it is larger than the sum of its proper divisors (1).

10818609643 is an equidigital number, since it uses as much as digits as its factorization.

10818609643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

It can be divided in two parts, 1081860 and 9643, that added together give a triangular number (1091503 = T₁₄₇₇).

The spelling of 10818609643 in words is "ten billion, eight hundred eighteen million, six hundred nine thousand, six hundred forty-three".