6139656071 has 4 divisors (see below), whose sum is σ = 6147063000. Its totient is φ = 6132249144.

The previous prime is 6139656049. The next prime is 6139656077. The reversal of 6139656071 is 1706569316.

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 6139656071 - 2³⁰ = 5065914247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6139656077) 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, 3702221 + ... + 3703878.

It is an arithmetic number, because the mean of its divisors is an integer number (1536765750).

Almost surely, 2^6139656071 is an apocalyptic number.

6139656071 is a deficient number, since it is larger than the sum of its proper divisors (7406929).

6139656071 is an equidigital number, since it uses as much as digits as its factorization.

6139656071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406928.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 6139656071 is about 78355.9574697419. The cubic root of 6139656071 is about 1831.1110407108. Note that the first 3 decimals are identical.

The spelling of 6139656071 in words is "six billion, one hundred thirty-nine million, six hundred fifty-six thousand, seventy-one".