404947801682 has 6 divisors (see below), whose sum is σ = 607423052439. Its totient is φ = 202473450870.

The previous prime is 404947801681. The next prime is 404947801831. The reversal of 404947801682 is 286108749404.

It can be written as a sum of positive squares in only one way, i.e., 202473900841 + 202473900841 = 449971^2 + 449971^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=449971.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404947801681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 674957 + ... + 1124927.

Almost surely, 2^404947801682 is an apocalyptic number.

404947801682 is a deficient number, since it is larger than the sum of its proper divisors (202475250757).

404947801682 is an frugal number, since it uses more digits than its factorization.

404947801682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899944 (or 449973 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 404947801682 in words is "four hundred four billion, nine hundred forty-seven million, eight hundred one thousand, six hundred eighty-two".