681291011320 has 32 divisors (see below), whose sum is σ = 1540847304720. Its totient is φ = 271104399360.

The previous prime is 681291011309. The next prime is 681291011329. The reversal of 681291011320 is 23110192186.

681291011320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681291011329) 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, 44117346 + ... + 44132785.

Almost surely, 2^681291011320 is an apocalyptic number.

It is an amenable number.

681291011320 is an abundant number, since it is smaller than the sum of its proper divisors (859556293400).

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

681291011320 is a wasteful number, since it uses less digits than its factorization.

681291011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88250335 (or 88250331 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 681291011320 in words is "six hundred eighty-one billion, two hundred ninety-one million, eleven thousand, three hundred twenty".