11020423661545 has 16 divisors (see below), whose sum is σ = 14002555060368. Its totient is φ = 8297651107840.

The previous prime is 11020423661531. The next prime is 11020423661581. The reversal of 11020423661545 is 54516632402011.

It can be written as a sum of positive squares in 8 ways, for example, as 2856951823504 + 8163471838041 = 1690252^2 + 2857179^2 .

It is not a de Polignac number, because 11020423661545 - 2⁷ = 11020423661417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020423661498 and 11020423661507.

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 15 ways as a sum of consecutive naturals, for example, 9189807 + ... + 10319563.

It is an arithmetic number, because the mean of its divisors is an integer number (875159691273).

Almost surely, 2^{11020423661545} is an apocalyptic number.

It is an amenable number.

11020423661545 is a deficient number, since it is larger than the sum of its proper divisors (2982131398823).

11020423661545 is a wasteful number, since it uses less digits than its factorization.

11020423661545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244540.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 11020423661545 in words is "eleven trillion, twenty billion, four hundred twenty-three million, six hundred sixty-one thousand, five hundred forty-five".