20111260045 has 4 divisors (see below), whose sum is σ = 24133512060. Its totient is φ = 16089008032.

The previous prime is 20111260033. The next prime is 20111260111. The reversal of 20111260045 is 54006211102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11629034244 + 8482225801 = 107838^2 + 92099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111260045 is a prime.

It is a super-2 number, since 2×20111260045² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111259998 and 20111260025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011126000 + ... + 2011126009.

It is an arithmetic number, because the mean of its divisors is an integer number (6033378015).

Almost surely, 2^20111260045 is an apocalyptic number.

It is an amenable number.

20111260045 is a deficient number, since it is larger than the sum of its proper divisors (4022252015).

20111260045 is an equidigital number, since it uses as much as digits as its factorization.

20111260045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022252014.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 20111260045 its reverse (54006211102), we get a palindrome (74117471147).

The spelling of 20111260045 in words is "twenty billion, one hundred eleven million, two hundred sixty thousand, forty-five".