201685553700 has 72 divisors (see below), whose sum is σ = 617869641312. Its totient is φ = 50619118080.

The previous prime is 201685553689. The next prime is 201685553701. The reversal of 201685553700 is 7355586102.

201685553700 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201685553701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19767994 + ... + 19778193.

It is an arithmetic number, because the mean of its divisors is an integer number (8581522796).

Almost surely, 2^201685553700 is an apocalyptic number.

201685553700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201685553700 is an abundant number, since it is smaller than the sum of its proper divisors (416184087612).

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

201685553700 is a wasteful number, since it uses less digits than its factorization.

201685553700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39546221 (or 39546214 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 201685553700 in words is "two hundred one billion, six hundred eighty-five million, five hundred fifty-three thousand, seven hundred".