2243865728656 has 10 divisors (see below), whose sum is σ = 4347489849302. Its totient is φ = 1121932864320.

The previous prime is 2243865728653. The next prime is 2243865728681. The reversal of 2243865728656 is 6568275683422.

It can be written as a sum of positive squares in only one way, i.e., 2176274048400 + 67591680256 = 1475220^2 + 259984^2 .

It is not an unprimeable number, because it can be changed into a prime (2243865728653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70120804005 + ... + 70120804036.

Almost surely, 2^{2243865728656} is an apocalyptic number.

It is an amenable number.

2243865728656 is a deficient number, since it is larger than the sum of its proper divisors (2103624120646).

2243865728656 is a wasteful number, since it uses less digits than its factorization.

2243865728656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140241608049 (or 140241608043 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 64.

The spelling of 2243865728656 in words is "two trillion, two hundred forty-three billion, eight hundred sixty-five million, seven hundred twenty-eight thousand, six hundred fifty-six".