201500421541 has 8 divisors (see below), whose sum is σ = 214545309120. Its totient is φ = 188587969728.

The previous prime is 201500421481. The next prime is 201500421547. The reversal of 201500421541 is 145124005102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201500421541 - 2¹³ = 201500413349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201500421547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33105801 + ... + 33111886.

It is an arithmetic number, because the mean of its divisors is an integer number (26818163640).

Almost surely, 2^201500421541 is an apocalyptic number.

It is an amenable number.

201500421541 is a deficient number, since it is larger than the sum of its proper divisors (13044887579).

201500421541 is a wasteful number, since it uses less digits than its factorization.

201500421541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66217883.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 201500421541 its reverse (145124005102), we get a palindrome (346624426643).

The spelling of 201500421541 in words is "two hundred one billion, five hundred million, four hundred twenty-one thousand, five hundred forty-one".