201543621401 has 8 divisors (see below), whose sum is σ = 203562421920. Its totient is φ = 199534741888.

The previous prime is 201543621343. The next prime is 201543621457. The reversal of 201543621401 is 104126345102.

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

It is a cyclic number.

It is not a de Polignac number, because 201543621401 - 2¹⁴ = 201543605017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201543621101) 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, 2439416 + ... + 2520681.

It is an arithmetic number, because the mean of its divisors is an integer number (25445302740).

Almost surely, 2^201543621401 is an apocalyptic number.

It is an amenable number.

201543621401 is a deficient number, since it is larger than the sum of its proper divisors (2018800519).

201543621401 is a wasteful number, since it uses less digits than its factorization.

201543621401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960503.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 201543621401 its reverse (104126345102), we get a palindrome (305669966503).

The spelling of 201543621401 in words is "two hundred one billion, five hundred forty-three million, six hundred twenty-one thousand, four hundred one".