7644428244467 has 12 divisors (see below), whose sum is σ = 8907004719216. Its totient is φ = 6541678024560.

The previous prime is 7644428244451. The next prime is 7644428244511.

It is a happy number.

7644428244467 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7644428244467 - 2⁴ = 7644428244451 is a prime.

It is a super-2 number, since 2×7644428244467² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7644428244437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127220159 + ... + 127280232.

It is an arithmetic number, because the mean of its divisors is an integer number (742250393268).

Almost surely, 2^{7644428244467} is an apocalyptic number.

7644428244467 is a deficient number, since it is larger than the sum of its proper divisors (1262576474749).

7644428244467 is a wasteful number, since it uses less digits than its factorization.

7644428244467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254501018 (or 254501011 counting only the distinct ones).

The product of its digits is 231211008, while the sum is 62.

The spelling of 7644428244467 in words is "seven trillion, six hundred forty-four billion, four hundred twenty-eight million, two hundred forty-four thousand, four hundred sixty-seven".