681444780104 has 32 divisors (see below), whose sum is σ = 1396073413440. Its totient is φ = 309256718400.

The previous prime is 681444780103. The next prime is 681444780127. The reversal of 681444780104 is 401087444186.

It is not an unprimeable number, because it can be changed into a prime (681444780101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080519 + ... + 6191574.

It is an arithmetic number, because the mean of its divisors is an integer number (43627294170).

Almost surely, 2^681444780104 is an apocalyptic number.

It is an amenable number.

681444780104 is an abundant number, since it is smaller than the sum of its proper divisors (714628633336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681444780104 is a wasteful number, since it uses less digits than its factorization.

681444780104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12272741 (or 12272737 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 681444780104 in words is "six hundred eighty-one billion, four hundred forty-four million, seven hundred eighty thousand, one hundred four".