361000143218 has 54 divisors (see below), whose sum is σ = 644726455821. Its totient is φ = 151417609200.

The previous prime is 361000143211. The next prime is 361000143239. The reversal of 361000143218 is 812341000163.

It can be written as a sum of positive squares in 2 ways, for example, as 308665802929 + 52334340289 = 555577^2 + 228767^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=424853.

It is a super-2 number, since 2×361000143218² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (361000143211) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 121506473 + ... + 121509443.

Almost surely, 2^361000143218 is an apocalyptic number.

361000143218 is a deficient number, since it is larger than the sum of its proper divisors (283726312603).

361000143218 is an equidigital number, since it uses as much as digits as its factorization.

361000143218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992 (or 2997 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 361000143218 in words is "three hundred sixty-one billion, one hundred forty-three thousand, two hundred eighteen".