6855590138 has 8 divisors (see below), whose sum is σ = 10413554880. Its totient is φ = 3384405180.

The previous prime is 6855590129. The next prime is 6855590141. The reversal of 6855590138 is 8310955586.

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

It is a super-2 number, since 2×6855590138² = 93998232280485718088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21694748 + ... + 21695063.

It is an arithmetic number, because the mean of its divisors is an integer number (1301694360).

Almost surely, 2^6855590138 is an apocalyptic number.

6855590138 is a deficient number, since it is larger than the sum of its proper divisors (3557964742).

6855590138 is a wasteful number, since it uses less digits than its factorization.

6855590138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43389892.

The product of its (nonzero) digits is 1296000, while the sum is 50.

The square root of 6855590138 is about 82798.4911577500. The cubic root of 6855590138 is about 1899.6850944402.

The spelling of 6855590138 in words is "six billion, eight hundred fifty-five million, five hundred ninety thousand, one hundred thirty-eight".