4681817878361 has 6 divisors (see below), whose sum is σ = 5069660779710. Its totient is φ = 4321678041408.

The previous prime is 4681817878307. The next prime is 4681817878417. The reversal of 4681817878361 is 1638787181864.

It can be written as a sum of positive squares in 3 ways, for example, as 92282895961 + 4589534982400 = 303781^2 + 2142320^2 .

It is not a de Polignac number, because 4681817878361 - 2¹⁰ = 4681817877337 is a prime.

It is a super-2 number, since 2×4681817878361² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4681817878291 and 4681817878300.

It is not an unprimeable number, because it can be changed into a prime (4681817878961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13851532016 + ... + 13851532353.

It is an arithmetic number, because the mean of its divisors is an integer number (844943463285).

Almost surely, 2^{4681817878361} is an apocalyptic number.

It is an amenable number.

4681817878361 is a deficient number, since it is larger than the sum of its proper divisors (387842901349).

4681817878361 is a wasteful number, since it uses less digits than its factorization.

4681817878361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27703064395 (or 27703064382 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 68.

The spelling of 4681817878361 in words is "four trillion, six hundred eighty-one billion, eight hundred seventeen million, eight hundred seventy-eight thousand, three hundred sixty-one".