4278812223841 has 3 divisors (see below), whose sum is σ = 4278814292371. Its totient is φ = 4278810155312.

The previous prime is 4278812223823. The next prime is 4278812223919. The reversal of 4278812223841 is 1483222188724.

The square root of 4278812223841 is 2068529.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 16404230241 + 4262407993600 = 128079^2 + 2064560^2 .

It is not a de Polignac number, because 4278812223841 - 2⁵ = 4278812223809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278812223041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1034265 + ... + 3102793.

Almost surely, 2^{4278812223841} is an apocalyptic number.

4278812223841 is the 2068529-th square number.

4278812223841 is the 1034265-th centered octagonal number.

It is an amenable number.

4278812223841 is a deficient number, since it is larger than the sum of its proper divisors (2068530).

4278812223841 is an frugal number, since it uses more digits than its factorization.

4278812223841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137058 (or 2068529 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 52.

The spelling of 4278812223841 in words is "four trillion, two hundred seventy-eight billion, eight hundred twelve million, two hundred twenty-three thousand, eight hundred forty-one".