201544000000 has 560 divisors, whose sum is σ = 594611138880. Its totient is φ = 66816000000.

The previous prime is 201543999991. The next prime is 201544000019. The reversal of 201544000000 is 445102.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3303999970 + ... + 3304000030.

Almost surely, 2^201544000000 is an apocalyptic number.

201544000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201544000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297305569440).

201544000000 is an abundant number, since it is smaller than the sum of its proper divisors (393067138880).

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

201544000000 is an frugal number, since it uses more digits than its factorization.

201544000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 201544000000 its reverse (445102), we get a palindrome (201544445102).

The spelling of 201544000000 in words is "two hundred one billion, five hundred forty-four million", and thus it is an aban number.