6171678139 has 4 divisors (see below), whose sum is σ = 6732739800. Its totient is φ = 5610616480.

The previous prime is 6171678131. The next prime is 6171678199. The reversal of 6171678139 is 9318761716.

6171678139 is digitally balanced in base 3, 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 6171678139 - 2³ = 6171678131 is a prime.

It is a super-2 number, since 2×6171678139² = 76179222102821006642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6171678092 and 6171678101.

It is not an unprimeable number, because it can be changed into a prime (6171678131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280530814 + ... + 280530835.

It is an arithmetic number, because the mean of its divisors is an integer number (1683184950).

Almost surely, 2^6171678139 is an apocalyptic number.

6171678139 is a deficient number, since it is larger than the sum of its proper divisors (561061661).

6171678139 is a wasteful number, since it uses less digits than its factorization.

6171678139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561061660.

The product of its digits is 381024, while the sum is 49.

The square root of 6171678139 is about 78560.0288887421. The cubic root of 6171678139 is about 1834.2889774508.

The spelling of 6171678139 in words is "six billion, one hundred seventy-one million, six hundred seventy-eight thousand, one hundred thirty-nine".