11131559749485 has 36 divisors (see below), whose sum is σ = 22444859254428. Its totient is φ = 5088713027328.

The previous prime is 11131559749463. The next prime is 11131559749517. The reversal of 11131559749485 is 58494795513111.

11131559749485 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 1 + 55 + 97 + 494 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2606952535236 + 8524607214249 = 1614606^2 + 2919693^2 .

It is not a de Polignac number, because 11131559749485 - 2¹¹ = 11131559747437 is a prime.

It is a super-3 number, since 3×11131559749485³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2524161004 + ... + 2524165413.

It is an arithmetic number, because the mean of its divisors is an integer number (623468312623).

Almost surely, 2^{11131559749485} is an apocalyptic number.

11131559749485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11131559749485 is an abundant number, since it is smaller than the sum of its proper divisors (11313299504943).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131559749485 is a wasteful number, since it uses less digits than its factorization.

11131559749485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048326442 (or 5048326432 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 63.

The spelling of 11131559749485 in words is "eleven trillion, one hundred thirty-one billion, five hundred fifty-nine million, seven hundred forty-nine thousand, four hundred eighty-five".