6571647778131 has 48 divisors (see below), whose sum is σ = 10414124448000. Its totient is φ = 4129656952608.

The previous prime is 6571647778121. The next prime is 6571647778147. The reversal of 6571647778131 is 1318777461756.

6571647778131 is a `hidden beast` number, since 6 + 57 + 1 + 6 + 477 + 7 + 81 + 31 = 666.

It is not a de Polignac number, because 6571647778131 - 2¹⁸ = 6571647515987 is a prime.

It is a super-2 number, since 2×6571647778131² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6571647778121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2657496 + ... + 4495061.

It is an arithmetic number, because the mean of its divisors is an integer number (216960926000).

Almost surely, 2^{6571647778131} is an apocalyptic number.

6571647778131 is a deficient number, since it is larger than the sum of its proper divisors (3842476669869).

6571647778131 is a wasteful number, since it uses less digits than its factorization.

6571647778131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152790 (or 7152778 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 63.

The spelling of 6571647778131 in words is "six trillion, five hundred seventy-one billion, six hundred forty-seven million, seven hundred seventy-eight thousand, one hundred thirty-one".