201144423140 has 24 divisors (see below), whose sum is σ = 432705809592. Its totient is φ = 78495384320.

The previous prime is 201144423121. The next prime is 201144423173. The reversal of 201144423140 is 41324441102.

It can be written as a sum of positive squares in 4 ways, for example, as 21599005156 + 179545417984 = 146966^2 + 423728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122648219 + ... + 122649858.

It is an arithmetic number, because the mean of its divisors is an integer number (18029408733).

Almost surely, 2^201144423140 is an apocalyptic number.

201144423140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201144423140 is an abundant number, since it is smaller than the sum of its proper divisors (231561386452).

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

201144423140 is a wasteful number, since it uses less digits than its factorization.

201144423140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245298127 (or 245298125 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 201144423140 its reverse (41324441102), we get a palindrome (242468864242).

The spelling of 201144423140 in words is "two hundred one billion, one hundred forty-four million, four hundred twenty-three thousand, one hundred forty".