20454441215 has 8 divisors (see below), whose sum is σ = 26433431808. Its totient is φ = 15104818080.

The previous prime is 20454441193. The next prime is 20454441223. The reversal of 20454441215 is 51214445402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20454441215 - 2⁶ = 20454441151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157341791 + ... + 157341920.

It is an arithmetic number, because the mean of its divisors is an integer number (3304178976).

Almost surely, 2^20454441215 is an apocalyptic number.

20454441215 is a deficient number, since it is larger than the sum of its proper divisors (5978990593).

20454441215 is a wasteful number, since it uses less digits than its factorization.

20454441215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314683729.

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 20454441215 its reverse (51214445402), we get a palindrome (71668886617).

The spelling of 20454441215 in words is "twenty billion, four hundred fifty-four million, four hundred forty-one thousand, two hundred fifteen".