20413443321 has 12 divisors (see below), whose sum is σ = 29536324272. Its totient is φ = 13585774776.

The previous prime is 20413443287. The next prime is 20413443367. The reversal of 20413443321 is 12334431402.

20413443321 is a `hidden beast` number, since 204 + 1 + 3 + 4 + 433 + 21 = 666.

It is not a de Polignac number, because 20413443321 - 2¹⁰ = 20413442297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20413443121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1926711 + ... + 1937276.

It is an arithmetic number, because the mean of its divisors is an integer number (2461360356).

Almost surely, 2^20413443321 is an apocalyptic number.

It is an amenable number.

20413443321 is a deficient number, since it is larger than the sum of its proper divisors (9122880951).

20413443321 is a wasteful number, since it uses less digits than its factorization.

20413443321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864580 (or 3864577 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20413443321 its reverse (12334431402), we get a palindrome (32747874723).

The spelling of 20413443321 in words is "twenty billion, four hundred thirteen million, four hundred forty-three thousand, three hundred twenty-one".