21620546204241 has 32 divisors (see below), whose sum is σ = 29345881243392. Its totient is φ = 14156117176320.

The previous prime is 21620546204219. The next prime is 21620546204293. The reversal of 21620546204241 is 14240264502612.

It is not a de Polignac number, because 21620546204241 - 2¹⁵ = 21620546171473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21620546204241.

It is not an unprimeable number, because it can be changed into a prime (21620546204941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60046041 + ... + 60405033.

It is an arithmetic number, because the mean of its divisors is an integer number (917058788856).

Almost surely, 2^{21620546204241} is an apocalyptic number.

It is an amenable number.

21620546204241 is a deficient number, since it is larger than the sum of its proper divisors (7725335039151).

21620546204241 is a wasteful number, since it uses less digits than its factorization.

21620546204241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360153.

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 21620546204241 in words is "twenty-one trillion, six hundred twenty billion, five hundred forty-six million, two hundred four thousand, two hundred forty-one".