11618743645 has 8 divisors (see below), whose sum is σ = 13943160504. Its totient is φ = 9294549504.

The previous prime is 11618743613. The next prime is 11618743679. The reversal of 11618743645 is 54634781611.

It can be written as a sum of positive squares in 4 ways, for example, as 5187024441 + 6431719204 = 72021^2 + 80198^2 .

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 11618743645 - 2⁵ = 11618743613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11618743595 and 11618743604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97317 + ... + 180853.

It is an arithmetic number, because the mean of its divisors is an integer number (1742895063).

Almost surely, 2^11618743645 is an apocalyptic number.

It is an amenable number.

11618743645 is a deficient number, since it is larger than the sum of its proper divisors (2324416859).

11618743645 is an equidigital number, since it uses as much as digits as its factorization.

11618743645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111359.

The product of its digits is 483840, while the sum is 46.

The spelling of 11618743645 in words is "eleven billion, six hundred eighteen million, seven hundred forty-three thousand, six hundred forty-five".