6427131871 has 8 divisors (see below), whose sum is σ = 6489051264. Its totient is φ = 6365247000.

The previous prime is 6427131839. The next prime is 6427131883. The reversal of 6427131871 is 1781317246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6427131871 - 2⁵ = 6427131839 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 (6427131071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518496 + ... + 530746.

It is an arithmetic number, because the mean of its divisors is an integer number (811131408).

Almost surely, 2^6427131871 is an apocalyptic number.

6427131871 is a deficient number, since it is larger than the sum of its proper divisors (61919393).

6427131871 is a wasteful number, since it uses less digits than its factorization.

6427131871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17261.

The product of its digits is 56448, while the sum is 40.

The square root of 6427131871 is about 80169.3948523999. The cubic root of 6427131871 is about 1859.2554802448.

The spelling of 6427131871 in words is "six billion, four hundred twenty-seven million, one hundred thirty-one thousand, eight hundred seventy-one".