20368635700 has 36 divisors (see below), whose sum is σ = 50514218272. Its totient is φ = 6983532000.

The previous prime is 20368635673. The next prime is 20368635709. The reversal of 20368635700 is 753686302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368635709) 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 11 ways as a sum of consecutive naturals, for example, 14548326 + ... + 14549725.

Almost surely, 2^20368635700 is an apocalyptic number.

20368635700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20368635700 is an abundant number, since it is smaller than the sum of its proper divisors (30145582572).

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

20368635700 is a wasteful number, since it uses less digits than its factorization.

20368635700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29098072 (or 29098065 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 20368635700 in words is "twenty billion, three hundred sixty-eight million, six hundred thirty-five thousand, seven hundred".