304991000064 has 60 divisors (see below), whose sum is σ = 880224689916. Its totient is φ = 101663665152.

The previous prime is 304991000053. The next prime is 304991000099. The reversal of 304991000064 is 460000199403.

304991000064 is a `hidden beast` number, since 3 + 0 + 499 + 100 + 0 + 0 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 304990999992 and 304991000028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33089034 + ... + 33098249.

Almost surely, 2^304991000064 is an apocalyptic number.

It is an amenable number.

304991000064 is an abundant number, since it is smaller than the sum of its proper divisors (575233689852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304991000064 is an equidigital number, since it uses as much as digits as its factorization.

304991000064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66187307 (or 66187288 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

Adding to 304991000064 its reverse (460000199403), we get a palindrome (764991199467).

The spelling of 304991000064 in words is "three hundred four billion, nine hundred ninety-one million, sixty-four", and thus it is an aban number.