681088158371 has 16 divisors (see below), whose sum is σ = 699152256000. Its totient is φ = 663128393760.

The previous prime is 681088158353. The next prime is 681088158437. The reversal of 681088158371 is 173851880186.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681088158371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681088158301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18499001 + ... + 18535781.

It is an arithmetic number, because the mean of its divisors is an integer number (43697016000).

Almost surely, 2^681088158371 is an apocalyptic number.

681088158371 is a deficient number, since it is larger than the sum of its proper divisors (18064097629).

681088158371 is a wasteful number, since it uses less digits than its factorization.

681088158371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38186.

The product of its (nonzero) digits is 2580480, while the sum is 56.

The spelling of 681088158371 in words is "six hundred eighty-one billion, eighty-eight million, one hundred fifty-eight thousand, three hundred seventy-one".