2183718899872 has 12 divisors (see below), whose sum is σ = 4299196584186. Its totient is φ = 1091859449920.

The previous prime is 2183718899819. The next prime is 2183718899881. The reversal of 2183718899872 is 2789988173812.

It can be written as a sum of positive squares in only one way, i.e., 2183550003856 + 168896016 = 1477684^2 + 12996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2183718899795 and 2183718899804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34120607779 + ... + 34120607842.

Almost surely, 2^{2183718899872} is an apocalyptic number.

It is an amenable number.

2183718899872 is a deficient number, since it is larger than the sum of its proper divisors (2115477684314).

2183718899872 is an equidigital number, since it uses as much as digits as its factorization.

2183718899872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68241215631 (or 68241215623 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 73.

The spelling of 2183718899872 in words is "two trillion, one hundred eighty-three billion, seven hundred eighteen million, eight hundred ninety-nine thousand, eight hundred seventy-two".