201909145068 has 48 divisors (see below), whose sum is σ = 540354232320. Its totient is φ = 65131981200.

The previous prime is 201909145001. The next prime is 201909145111. The reversal of 201909145068 is 860541909102.

201909145068 is a `hidden beast` number, since 2 + 0 + 190 + 9 + 1 + 450 + 6 + 8 = 666.

201909145068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30150348 + ... + 30157043.

It is an arithmetic number, because the mean of its divisors is an integer number (11257379840).

Almost surely, 2^201909145068 is an apocalyptic number.

It is an amenable number.

201909145068 is an abundant number, since it is smaller than the sum of its proper divisors (338445087252).

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

201909145068 is a wasteful number, since it uses less digits than its factorization.

201909145068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60307435 (or 60307427 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 201909145068 in words is "two hundred one billion, nine hundred nine million, one hundred forty-five thousand, sixty-eight".