6860138857 has 16 divisors (see below), whose sum is σ = 8142567552. Its totient is φ = 5697400320.

The previous prime is 6860138851. The next prime is 6860138881. The reversal of 6860138857 is 7588310686.

6860138857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6860138857 - 2⁷ = 6860138729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6860138851) 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 15 ways as a sum of consecutive naturals, for example, 233413 + ... + 261154.

It is an arithmetic number, because the mean of its divisors is an integer number (508910472).

Almost surely, 2^6860138857 is an apocalyptic number.

It is an amenable number.

6860138857 is a deficient number, since it is larger than the sum of its proper divisors (1282428695).

6860138857 is a wasteful number, since it uses less digits than its factorization.

6860138857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494688.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 6860138857 is about 82825.9552133267. The cubic root of 6860138857 is about 1900.1051517982.

The spelling of 6860138857 in words is "six billion, eight hundred sixty million, one hundred thirty-eight thousand, eight hundred fifty-seven".