6444503122 has 4 divisors (see below), whose sum is σ = 9666754686. Its totient is φ = 3222251560.

The previous prime is 6444503111. The next prime is 6444503129. The reversal of 6444503122 is 2213054446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5269453281 + 1175049841 = 72591^2 + 34279^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6444503129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611125779 + ... + 1611125782.

Almost surely, 2^6444503122 is an apocalyptic number.

6444503122 is a deficient number, since it is larger than the sum of its proper divisors (3222251564).

6444503122 is a wasteful number, since it uses less digits than its factorization.

6444503122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222251563.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 6444503122 is about 80277.6626590486. The cubic root of 6444503122 is about 1860.9290385237.

Adding to 6444503122 its reverse (2213054446), we get a palindrome (8657557568).

The spelling of 6444503122 in words is "six billion, four hundred forty-four million, five hundred three thousand, one hundred twenty-two".