681277788089 has 8 divisors (see below), whose sum is σ = 700778628480. Its totient is φ = 661985513136.

The previous prime is 681277788083. The next prime is 681277788157. The reversal of 681277788089 is 980887772186.

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

It is a cyclic number.

It is not a de Polignac number, because 681277788089 - 2¹² = 681277783993 is a prime.

It is a super-3 number, since 3×681277788089³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681277788083) 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, 52134734 + ... + 52147799.

It is an arithmetic number, because the mean of its divisors is an integer number (87597328560).

Almost surely, 2^681277788089 is an apocalyptic number.

It is an amenable number.

681277788089 is a deficient number, since it is larger than the sum of its proper divisors (19500840391).

681277788089 is a wasteful number, since it uses less digits than its factorization.

681277788089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104282719.

The product of its (nonzero) digits is 151732224, while the sum is 71.

The spelling of 681277788089 in words is "six hundred eighty-one billion, two hundred seventy-seven million, seven hundred eighty-eight thousand, eighty-nine".