11311245521145 has 96 divisors (see below), whose sum is σ = 20846368202400. Its totient is φ = 5664779366400.

The previous prime is 11311245521137. The next prime is 11311245521221. The reversal of 11311245521145 is 54112554211311.

It is a happy number.

11311245521145 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 124 + 5 + 521 + 1 + 4 + 5 = 666.

11311245521145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 4139218733049 + 7172026788096 = 2034507^2 + 2678064^2 .

It is not a de Polignac number, because 11311245521145 - 2³ = 11311245521137 is a prime.

It is a super-2 number, since 2×11311245521145² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6286575 + ... + 7883115.

It is an arithmetic number, because the mean of its divisors is an integer number (217149668775).

Almost surely, 2^{11311245521145} is an apocalyptic number.

11311245521145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11311245521145 is a deficient number, since it is larger than the sum of its proper divisors (9535122681255).

11311245521145 is a wasteful number, since it uses less digits than its factorization.

11311245521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596731 (or 1596728 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 11311245521145 its reverse (54112554211311), we get a palindrome (65423799732456).

The spelling of 11311245521145 in words is "eleven trillion, three hundred eleven billion, two hundred forty-five million, five hundred twenty-one thousand, one hundred forty-five".