36543518781 has 32 divisors (see below), whose sum is σ = 61191134208. Its totient is φ = 18845063040.

The previous prime is 36543518771. The next prime is 36543518783. The reversal of 36543518781 is 18781534563.

It is not a de Polignac number, because 36543518781 - 2⁵ = 36543518749 is a prime.

It is a super-2 number, since 2×36543518781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36543518783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545715 + ... + 609008.

It is an arithmetic number, because the mean of its divisors is an integer number (1912222944).

Almost surely, 2^36543518781 is an apocalyptic number.

It is an amenable number.

36543518781 is a deficient number, since it is larger than the sum of its proper divisors (24647615427).

36543518781 is a wasteful number, since it uses less digits than its factorization.

36543518781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154881.

The product of its digits is 2419200, while the sum is 51.

The spelling of 36543518781 in words is "thirty-six billion, five hundred forty-three million, five hundred eighteen thousand, seven hundred eighty-one".