6581242071 has 6 divisors (see below), whose sum is σ = 9506238560. Its totient is φ = 4387494708.

The previous prime is 6581242067. The next prime is 6581242093. The reversal of 6581242071 is 1702421856.

6581242071 is a `hidden beast` number, since 6 + 581 + 2 + 4 + 2 + 0 + 71 = 666.

It is not a de Polignac number, because 6581242071 - 2² = 6581242067 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 (6581242001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365624551 + ... + 365624568.

Almost surely, 2^6581242071 is an apocalyptic number.

6581242071 is a deficient number, since it is larger than the sum of its proper divisors (2924996489).

6581242071 is a wasteful number, since it uses less digits than its factorization.

6581242071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731249125 (or 731249122 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 6581242071 is about 81124.8548288378. The cubic root of 6581242071 is about 1873.9987136021.

It can be divided in two parts, 658 and 1242071, that multiplied together give a palindrome (817282718).

The spelling of 6581242071 in words is "six billion, five hundred eighty-one million, two hundred forty-two thousand, seventy-one".