11020450645 has 4 divisors (see below), whose sum is σ = 13224540780. Its totient is φ = 8816360512.

The previous prime is 11020450619. The next prime is 11020450657. The reversal of 11020450645 is 54605402011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54605402011 = 31 ⋅1761464581.

It can be written as a sum of positive squares in 2 ways, for example, as 6966072369 + 4054378276 = 83463^2 + 63674^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020450645 - 2⁵ = 11020450613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102045060 + ... + 1102045069.

It is an arithmetic number, because the mean of its divisors is an integer number (3306135195).

Almost surely, 2^11020450645 is an apocalyptic number.

It is an amenable number.

11020450645 is a deficient number, since it is larger than the sum of its proper divisors (2204090135).

11020450645 is an equidigital number, since it uses as much as digits as its factorization.

11020450645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204090134.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 11020450645 its reverse (54605402011), we get a palindrome (65625852656).

The spelling of 11020450645 in words is "eleven billion, twenty million, four hundred fifty thousand, six hundred forty-five".