681100381139 has 8 divisors (see below), whose sum is σ = 717294330000. Its totient is φ = 644941088352.

The previous prime is 681100381079. The next prime is 681100381183. The reversal of 681100381139 is 931183001186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-681100381139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 681100381096 and 681100381105.

It is not an unprimeable number, because it can be changed into a prime (681100381439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8623664 + ... + 8702285.

It is an arithmetic number, because the mean of its divisors is an integer number (89661791250).

Almost surely, 2^681100381139 is an apocalyptic number.

681100381139 is a deficient number, since it is larger than the sum of its proper divisors (36193948861).

681100381139 is a wasteful number, since it uses less digits than its factorization.

681100381139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17328037.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 681100381139 in words is "six hundred eighty-one billion, one hundred million, three hundred eighty-one thousand, one hundred thirty-nine".