6859121902 has 16 divisors (see below), whose sum is σ = 10437338880. Its totient is φ = 3380078592.

The previous prime is 6859121897. The next prime is 6859121933. The reversal of 6859121902 is 2091219586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189043 + ... + 222385.

It is an arithmetic number, because the mean of its divisors is an integer number (652333680).

Almost surely, 2^6859121902 is an apocalyptic number.

6859121902 is a deficient number, since it is larger than the sum of its proper divisors (3578216978).

6859121902 is a wasteful number, since it uses less digits than its factorization.

6859121902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34827.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 6859121902 is about 82819.8158776026. The cubic root of 6859121902 is about 1900.0112558890.

The spelling of 6859121902 in words is "six billion, eight hundred fifty-nine million, one hundred twenty-one thousand, nine hundred two".