681097041897 has 64 divisors (see below), whose sum is σ = 981403852800. Its totient is φ = 419389850880.

The previous prime is 681097041847. The next prime is 681097041917. The reversal of 681097041897 is 798140790186.

681097041897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 681097041897 - 2¹⁰ = 681097040873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 681097041897.

It is not an unprimeable number, because it can be changed into a prime (681097041847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28077828 + ... + 28102074.

It is an arithmetic number, because the mean of its divisors is an integer number (15334435200).

Almost surely, 2^681097041897 is an apocalyptic number.

681097041897 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

681097041897 is a deficient number, since it is larger than the sum of its proper divisors (300306810903).

681097041897 is a wasteful number, since it uses less digits than its factorization.

681097041897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24486.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 681097041897 in words is "six hundred eighty-one billion, ninety-seven million, forty-one thousand, eight hundred ninety-seven".