681280116818 has 8 divisors (see below), whose sum is σ = 1167908771712. Its totient is φ = 291977192916.

The previous prime is 681280116799. The next prime is 681280116841. The reversal of 681280116818 is 818611082186.

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

It is a super-3 number, since 3×681280116818³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24331432730 + ... + 24331432757.

It is an arithmetic number, because the mean of its divisors is an integer number (145988596464).

Almost surely, 2^681280116818 is an apocalyptic number.

681280116818 is a deficient number, since it is larger than the sum of its proper divisors (486628654894).

681280116818 is a wasteful number, since it uses less digits than its factorization.

681280116818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48662865496.

The product of its (nonzero) digits is 294912, while the sum is 50.

The spelling of 681280116818 in words is "six hundred eighty-one billion, two hundred eighty million, one hundred sixteen thousand, eight hundred eighteen".