20704205700 has 54 divisors (see below), whose sum is σ = 64896185354. Its totient is φ = 5521121280.

The previous prime is 20704205689. The next prime is 20704205759. The reversal of 20704205700 is 750240702.

20704205700 is a `hidden beast` number, since 2 + 0 + 70 + 4 + 20 + 570 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 4518259524 + 16185946176 = 67218^2 + 127224^2 .

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, 11501437 + ... + 11503236.

Almost surely, 2^20704205700 is an apocalyptic number.

20704205700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20704205700 is an abundant number, since it is smaller than the sum of its proper divisors (44191979654).

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

20704205700 is a wasteful number, since it uses less digits than its factorization.

20704205700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23004693 (or 23004683 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The spelling of 20704205700 in words is "twenty billion, seven hundred four million, two hundred five thousand, seven hundred".