11545311133 has 16 divisors (see below), whose sum is σ = 12788118000. Its totient is φ = 10373558272.

The previous prime is 11545311103. The next prime is 11545311163. The reversal of 11545311133 is 33111354511.

It is an interprime number because it is at equal distance from previous prime (11545311103) and next prime (11545311163).

It can be written as a sum of positive squares in 8 ways, for example, as 59259204 + 11486051929 = 7698^2 + 107173^2 .

It is a cyclic number.

It is not a de Polignac number, because 11545311133 - 2¹³ = 11545302941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11545311103) by changing a digit.

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, 87688 + ... + 175441.

It is an arithmetic number, because the mean of its divisors is an integer number (799257375).

Almost surely, 2^11545311133 is an apocalyptic number.

It is an amenable number.

11545311133 is a deficient number, since it is larger than the sum of its proper divisors (1242806867).

11545311133 is a wasteful number, since it uses less digits than its factorization.

11545311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263264.

The product of its digits is 2700, while the sum is 28.

Adding to 11545311133 its reverse (33111354511), we get a palindrome (44656665644).

The spelling of 11545311133 in words is "eleven billion, five hundred forty-five million, three hundred eleven thousand, one hundred thirty-three".