201545440000 has 90 divisors (see below), whose sum is σ = 502718969060. Its totient is φ = 80618112000.

The previous prime is 201545439971. The next prime is 201545440021. The reversal of 201545440000 is 44545102.

It is a happy number.

201545440000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 469830 + ... + 789829.

Almost surely, 2^201545440000 is an apocalyptic number.

201545440000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201545440000 is an abundant number, since it is smaller than the sum of its proper divisors (301173529060).

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

201545440000 is an frugal number, since it uses more digits than its factorization.

201545440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259695 (or 1259666 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 201545440000 its reverse (44545102), we get a palindrome (201589985102).

The spelling of 201545440000 in words is "two hundred one billion, five hundred forty-five million, four hundred forty thousand".