7644849640851 has 8 divisors (see below), whose sum is σ = 10193163400144. Its totient is φ = 5096551154400.

The previous prime is 7644849640843. The next prime is 7644849640907. The reversal of 7644849640851 is 1580469484467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7644849640851 - 2³ = 7644849640843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7644849640451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2594200 + ... + 4692501.

It is an arithmetic number, because the mean of its divisors is an integer number (1274145425018).

Almost surely, 2^{7644849640851} is an apocalyptic number.

7644849640851 is a deficient number, since it is larger than the sum of its proper divisors (2548313759293).

7644849640851 is a wasteful number, since it uses less digits than its factorization.

7644849640851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636421.

The product of its (nonzero) digits is 185794560, while the sum is 66.

The spelling of 7644849640851 in words is "seven trillion, six hundred forty-four billion, eight hundred forty-nine million, six hundred forty thousand, eight hundred fifty-one".