20383558441 has 3 divisors (see below), whose sum is σ = 20383701213. Its totient is φ = 20383415670.

The previous prime is 20383558423. The next prime is 20383558457. The reversal of 20383558441 is 14485538302.

The square root of 20383558441 is 142771.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 20383558441 - 2⁷ = 20383558313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20383558411) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71386 + ... + 214156.

It is an arithmetic number, because the mean of its divisors is an integer number (6794567071).

Almost surely, 2^20383558441 is an apocalyptic number.

20383558441 is the 142771-st square number.

20383558441 is the 71386-th centered octagonal number.

It is an amenable number.

20383558441 is a deficient number, since it is larger than the sum of its proper divisors (142772).

20383558441 is an frugal number, since it uses more digits than its factorization.

20383558441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285542 (or 142771 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 20383558441 in words is "twenty billion, three hundred eighty-three million, five hundred fifty-eight thousand, four hundred forty-one".