20418466600 has 72 divisors (see below), whose sum is σ = 55223644590. Its totient is φ = 7000613760.

The previous prime is 20418466571. The next prime is 20418466633. The reversal of 20418466600 is 666481402.

It can be written as a sum of positive squares in 3 ways, for example, as 12881796004 + 7536670596 = 113498^2 + 86814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20418466600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1031959 + ... + 1051558.

Almost surely, 2^20418466600 is an apocalyptic number.

20418466600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20418466600 is an abundant number, since it is smaller than the sum of its proper divisors (34805177990).

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

20418466600 is a wasteful number, since it uses less digits than its factorization.

20418466600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083547 (or 2083531 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 20418466600 in words is "twenty billion, four hundred eighteen million, four hundred sixty-six thousand, six hundred".