681088731148 has 24 divisors (see below), whose sum is σ = 1362479148800. Its totient is φ = 291830523408.

The previous prime is 681088731139. The next prime is 681088731151. The reversal of 681088731148 is 841137880186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564838 + ... + 2817901.

Almost surely, 2^681088731148 is an apocalyptic number.

It is an amenable number.

681088731148 is an abundant number, since it is smaller than the sum of its proper divisors (681390417652).

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

681088731148 is a wasteful number, since it uses less digits than its factorization.

681088731148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387269 (or 5387267 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 55.

The spelling of 681088731148 in words is "six hundred eighty-one billion, eighty-eight million, seven hundred thirty-one thousand, one hundred forty-eight".