36543135121 has 4 divisors (see below), whose sum is σ = 36625625712. Its totient is φ = 36460644532.

The previous prime is 36543135073. The next prime is 36543135143. The reversal of 36543135121 is 12153134563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12153134563 = 421 ⋅28867303.

It is a cyclic number.

It is not a de Polignac number, because 36543135121 - 2¹⁵ = 36543102353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36543135191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41244631 + ... + 41245516.

It is an arithmetic number, because the mean of its divisors is an integer number (9156406428).

Almost surely, 2^36543135121 is an apocalyptic number.

It is an amenable number.

36543135121 is a deficient number, since it is larger than the sum of its proper divisors (82490591).

36543135121 is an equidigital number, since it uses as much as digits as its factorization.

36543135121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82490590.

The product of its digits is 32400, while the sum is 34.

Adding to 36543135121 its reverse (12153134563), we get a palindrome (48696269684).

The spelling of 36543135121 in words is "thirty-six billion, five hundred forty-three million, one hundred thirty-five thousand, one hundred twenty-one".