20604004650 has 36 divisors (see below), whose sum is σ = 55356093702. Its totient is φ = 5494401120.

The previous prime is 20604004627. The next prime is 20604004661. The reversal of 20604004650 is 5640040602.

It is a happy number.

20604004650 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 4 + 0 + 0 + 4 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 20112628761 + 491375889 = 141819^2 + 22167^2 .

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 17 ways as a sum of consecutive naturals, for example, 22892889 + ... + 22893788.

Almost surely, 2^20604004650 is an apocalyptic number.

20604004650 is an abundant number, since it is smaller than the sum of its proper divisors (34752089052).

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

20604004650 is a wasteful number, since it uses less digits than its factorization.

20604004650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45786695 (or 45786687 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 20604004650 in words is "twenty billion, six hundred four million, four thousand, six hundred fifty".