8639641042 has 8 divisors (see below), whose sum is σ = 12959856000. Its totient is φ = 4319689044.

The previous prime is 8639641039. The next prime is 8639641099. The reversal of 8639641042 is 2401469368.

It is a happy number.

8639641042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×8639641042² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8639641042.

It is an unprimeable number.

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, 95259 + ... + 162337.

It is an arithmetic number, because the mean of its divisors is an integer number (1619982000).

Almost surely, 2^8639641042 is an apocalyptic number.

8639641042 is a deficient number, since it is larger than the sum of its proper divisors (4320214958).

8639641042 is a wasteful number, since it uses less digits than its factorization.

8639641042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131480.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 8639641042 is about 92949.6694023169. The cubic root of 8639641042 is about 2051.9427185099.

The spelling of 8639641042 in words is "eight billion, six hundred thirty-nine million, six hundred forty-one thousand, forty-two".