11211007545 has 24 divisors (see below), whose sum is σ = 19437781896. Its totient is φ = 5977552128.

The previous prime is 11211007531. The next prime is 11211007559. The reversal of 11211007545 is 54570011211.

11211007545 is a `hidden beast` number, since 1 + 1 + 2 + 110 + 0 + 7 + 545 = 666.

11211007545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11211007531) and next prime (11211007559).

It can be written as a sum of positive squares in 4 ways, for example, as 23503104 + 11187504441 = 4848^2 + 105771^2 .

It is not a de Polignac number, because 11211007545 - 2⁷ = 11211007417 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 139987 + ... + 204983.

It is an arithmetic number, because the mean of its divisors is an integer number (809907579).

Almost surely, 2^11211007545 is an apocalyptic number.

11211007545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11211007545 is a deficient number, since it is larger than the sum of its proper divisors (8226774351).

11211007545 is a wasteful number, since it uses less digits than its factorization.

11211007545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68841 (or 68838 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

Adding to 11211007545 its reverse (54570011211), we get a palindrome (65781018756).

The spelling of 11211007545 in words is "eleven billion, two hundred eleven million, seven thousand, five hundred forty-five".