6581971701 has 12 divisors (see below), whose sum is σ = 9508026528. Its totient is φ = 4387642344.

The previous prime is 6581971637. The next prime is 6581971733. The reversal of 6581971701 is 1071791856.

It is not a de Polignac number, because 6581971701 - 2⁶ = 6581971637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581971001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162936 + ... + 199278.

It is an arithmetic number, because the mean of its divisors is an integer number (792335544).

Almost surely, 2^6581971701 is an apocalyptic number.

It is an amenable number.

6581971701 is a deficient number, since it is larger than the sum of its proper divisors (2926054827).

6581971701 is a wasteful number, since it uses less digits than its factorization.

6581971701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56472 (or 56469 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The square root of 6581971701 is about 81129.3516614055. The cubic root of 6581971701 is about 1874.0679647222.

The spelling of 6581971701 in words is "six billion, five hundred eighty-one million, nine hundred seventy-one thousand, seven hundred one".