304681886561 has 8 divisors (see below), whose sum is σ = 328146212520. Its totient is φ = 281221454592.

The previous prime is 304681886527. The next prime is 304681886629. The reversal of 304681886561 is 165688186403.

It can be written as a sum of positive squares in 4 ways, for example, as 976187536 + 303705699025 = 31244^2 + 551095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 304681886561 - 2¹⁰ = 304681885537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304681886497 and 304681886506.

It is not an unprimeable number, because it can be changed into a prime (304681886501) 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, 809966 + ... + 1124903.

It is an arithmetic number, because the mean of its divisors is an integer number (41018276565).

Almost surely, 2^304681886561 is an apocalyptic number.

It is an amenable number.

304681886561 is a deficient number, since it is larger than the sum of its proper divisors (23464325959).

304681886561 is a wasteful number, since it uses less digits than its factorization.

304681886561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946995.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 304681886561 in words is "three hundred four billion, six hundred eighty-one million, eight hundred eighty-six thousand, five hundred sixty-one".