13643707222378 has 16 divisors (see below), whose sum is σ = 20484455123880. Its totient is φ = 6815556732096.

The previous prime is 13643707222279. The next prime is 13643707222403. The reversal of 13643707222378 is 87322270734631.

It can be written as a sum of positive squares in 4 ways, for example, as 12162844575729 + 1480862646649 = 3487527^2 + 1216907^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22503700 + ... + 23102032.

Almost surely, 2^{13643707222378} is an apocalyptic number.

13643707222378 is a deficient number, since it is larger than the sum of its proper divisors (6840747901502).

13643707222378 is a wasteful number, since it uses less digits than its factorization.

13643707222378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608841.

The product of its (nonzero) digits is 14224896, while the sum is 55.

The spelling of 13643707222378 in words is "thirteen trillion, six hundred forty-three billion, seven hundred seven million, two hundred twenty-two thousand, three hundred seventy-eight".