36561140664543 has 16 divisors (see below), whose sum is σ = 59088712185600. Its totient is φ = 22158267069240.

The previous prime is 36561140664539. The next prime is 36561140664551. The reversal of 36561140664543 is 34546604116563.

It is a happy number.

36561140664543 is a `hidden beast` number, since 3 + 6 + 56 + 1 + 1 + 40 + 6 + 6 + 4 + 543 = 666.

It is not a de Polignac number, because 36561140664543 - 2² = 36561140664539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36561140664543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36561140624543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61550741563 + ... + 61550742156.

It is an arithmetic number, because the mean of its divisors is an integer number (3693044511600).

Almost surely, 2^{36561140664543} is an apocalyptic number.

36561140664543 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

36561140664543 is a deficient number, since it is larger than the sum of its proper divisors (22527571521057).

36561140664543 is a wasteful number, since it uses less digits than its factorization.

36561140664543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123101483739 (or 123101483733 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 36561140664543 in words is "thirty-six trillion, five hundred sixty-one billion, one hundred forty million, six hundred sixty-four thousand, five hundred forty-three".