8651371643 has 4 divisors (see below), whose sum is σ = 8727932568. Its totient is φ = 8574810720.

The previous prime is 8651371637. The next prime is 8651371657. The reversal of 8651371643 is 3461731568.

8651371643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8651371643 - 2¹⁶ = 8651306107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8651371594 and 8651371603.

It is not an unprimeable number, because it can be changed into a prime (8651371613) 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 in 3 ways as a sum of consecutive naturals, for example, 38280293 + ... + 38280518.

It is an arithmetic number, because the mean of its divisors is an integer number (2181983142).

Almost surely, 2^8651371643 is an apocalyptic number.

8651371643 is a deficient number, since it is larger than the sum of its proper divisors (76560925).

8651371643 is a wasteful number, since it uses less digits than its factorization.

8651371643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76560924.

The product of its digits is 362880, while the sum is 44.

The square root of 8651371643 is about 93012.7498948397. The cubic root of 8651371643 is about 2052.8709837531.

The spelling of 8651371643 in words is "eight billion, six hundred fifty-one million, three hundred seventy-one thousand, six hundred forty-three".