11012134135561 has 8 divisors (see below), whose sum is σ = 11859759201920. Its totient is φ = 10164585901392.

The previous prime is 11012134135549. The next prime is 11012134135567. The reversal of 11012134135561 is 16553143121011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11012134135561 - 2¹⁷ = 11012134004489 is a prime.

It is a super-3 number, since 3×11012134135561³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012134135567) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18910191 + ... + 19483828.

It is an arithmetic number, because the mean of its divisors is an integer number (1482469900240).

Almost surely, 2^{11012134135561} is an apocalyptic number.

It is an amenable number.

11012134135561 is a deficient number, since it is larger than the sum of its proper divisors (847625066359).

11012134135561 is a wasteful number, since it uses less digits than its factorization.

11012134135561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38416095.

The product of its (nonzero) digits is 10800, while the sum is 34.

Adding to 11012134135561 its reverse (16553143121011), we get a palindrome (27565277256572).

The spelling of 11012134135561 in words is "eleven trillion, twelve billion, one hundred thirty-four million, one hundred thirty-five thousand, five hundred sixty-one".