21441533601 has 8 divisors (see below), whose sum is σ = 28991369664. Its totient is φ = 14093026640.

The previous prime is 21441533551. The next prime is 21441533629. The reversal of 21441533601 is 10633514412.

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 21441533601 - 2⁶ = 21441533537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21441533651) 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, 50332026 + ... + 50332451.

It is an arithmetic number, because the mean of its divisors is an integer number (3623921208).

Almost surely, 2^21441533601 is an apocalyptic number.

It is an amenable number.

21441533601 is a deficient number, since it is larger than the sum of its proper divisors (7549836063).

21441533601 is a wasteful number, since it uses less digits than its factorization.

21441533601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100664551.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 21441533601 in words is "twenty-one billion, four hundred forty-one million, five hundred thirty-three thousand, six hundred one".