20045311011 has 24 divisors (see below), whose sum is σ = 33249003840. Its totient is φ = 11509268400.

The previous prime is 20045310979. The next prime is 20045311037. The reversal of 20045311011 is 11011354002.

20045311011 is a `hidden beast` number, since 200 + 453 + 1 + 1 + 0 + 11 = 666.

It is not a de Polignac number, because 20045311011 - 2⁵ = 20045310979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20045311051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5326485 + ... + 5330246.

It is an arithmetic number, because the mean of its divisors is an integer number (1385375160).

Almost surely, 2^20045311011 is an apocalyptic number.

20045311011 is a deficient number, since it is larger than the sum of its proper divisors (13203692829).

20045311011 is a wasteful number, since it uses less digits than its factorization.

20045311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10656767 (or 10656764 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 20045311011 its reverse (11011354002), we get a palindrome (31056665013).

The spelling of 20045311011 in words is "twenty billion, forty-five million, three hundred eleven thousand, eleven".