20427085441 has 4 divisors (see below), whose sum is σ = 23345240512. Its totient is φ = 17508930372.

The previous prime is 20427085423. The next prime is 20427085463. The reversal of 20427085441 is 14458072402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20427085441 - 2²⁹ = 19890214529 is a prime.

It is a super-2 number, since 2×20427085441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20427085441.

It is not an unprimeable number, because it can be changed into a prime (20427085141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1459077525 + ... + 1459077538.

It is an arithmetic number, because the mean of its divisors is an integer number (5836310128).

Almost surely, 2^20427085441 is an apocalyptic number.

It is an amenable number.

20427085441 is a deficient number, since it is larger than the sum of its proper divisors (2918155071).

20427085441 is an equidigital number, since it uses as much as digits as its factorization.

20427085441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918155070.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 20427085441 in words is "twenty billion, four hundred twenty-seven million, eighty-five thousand, four hundred forty-one".