20554441145 has 32 divisors (see below), whose sum is σ = 28807142400. Its totient is φ = 13785762816.

The previous prime is 20554441123. The next prime is 20554441163. The reversal of 20554441145 is 54114445502.

It is not a de Polignac number, because 20554441145 - 2¹⁶ = 20554375609 is a prime.

It is a super-2 number, since 2×20554441145² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 31 ways as a sum of consecutive naturals, for example, 3499271 + ... + 3505139.

It is an arithmetic number, because the mean of its divisors is an integer number (900223200).

Almost surely, 2^20554441145 is an apocalyptic number.

It is an amenable number.

20554441145 is a deficient number, since it is larger than the sum of its proper divisors (8252701255).

20554441145 is a wasteful number, since it uses less digits than its factorization.

20554441145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 20554441145 its reverse (54114445502), we get a palindrome (74668886647).

The spelling of 20554441145 in words is "twenty billion, five hundred fifty-four million, four hundred forty-one thousand, one hundred forty-five".