681698288441 has 16 divisors (see below), whose sum is σ = 697573638144. Its totient is φ = 665881001424.

The previous prime is 681698288431. The next prime is 681698288473. The reversal of 681698288441 is 144882896186.

681698288441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 681698288441 - 2³⁰ = 680624546617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681698288431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135712856 + ... + 135717878.

It is an arithmetic number, because the mean of its divisors is an integer number (43598352384).

Almost surely, 2^681698288441 is an apocalyptic number.

It is an amenable number.

681698288441 is a deficient number, since it is larger than the sum of its proper divisors (15875349703).

681698288441 is a wasteful number, since it uses less digits than its factorization.

681698288441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its digits is 42467328, while the sum is 65.

The spelling of 681698288441 in words is "six hundred eighty-one billion, six hundred ninety-eight million, two hundred eighty-eight thousand, four hundred forty-one".