681010367071 has 4 divisors (see below), whose sum is σ = 696847817512. Its totient is φ = 665172916632.

The previous prime is 681010367041. The next prime is 681010367087. The reversal of 681010367071 is 170763010186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681010367071 is a prime.

It is a super-2 number, since 2×681010367071² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681010367041) 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, 7918725156 + ... + 7918725241.

It is an arithmetic number, because the mean of its divisors is an integer number (174211954378).

Almost surely, 2^681010367071 is an apocalyptic number.

681010367071 is a deficient number, since it is larger than the sum of its proper divisors (15837450441).

681010367071 is a wasteful number, since it uses less digits than its factorization.

681010367071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15837450440.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 681010367071 in words is "six hundred eighty-one billion, ten million, three hundred sixty-seven thousand, seventy-one".