681297179041 has 4 divisors (see below), whose sum is σ = 681409369732. Its totient is φ = 681184988352.

The previous prime is 681297179039. The next prime is 681297179077. The reversal of 681297179041 is 140971792186.

It is a happy number.

681297179041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140971792186 = 2 ⋅70485896093.

It can be written as a sum of positive squares in 2 ways, for example, as 505634766400 + 175662412641 = 711080^2 + 419121^2 .

It is a cyclic number.

It is not a de Polignac number, because 681297179041 - 2¹ = 681297179039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681297179011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56086236 + ... + 56098381.

It is an arithmetic number, because the mean of its divisors is an integer number (170352342433).

Almost surely, 2^681297179041 is an apocalyptic number.

It is an amenable number.

681297179041 is a deficient number, since it is larger than the sum of its proper divisors (112190691).

681297179041 is a wasteful number, since it uses less digits than its factorization.

681297179041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112190690.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 681297179041 in words is "six hundred eighty-one billion, two hundred ninety-seven million, one hundred seventy-nine thousand, forty-one".