36561641427611 has 4 divisors (see below), whose sum is σ = 37251483718752. Its totient is φ = 35871799136472.

The previous prime is 36561641427593. The next prime is 36561641427631. The reversal of 36561641427611 is 11672414616563.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36561641427611 - 2¹⁴ = 36561641411227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 689842291087 = 36561641427611 / (3 + 6 + 5 + 6 + 1 + 6 + 4 + 1 + 4 + 2 + 7 + 6 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36561641427631) 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, 344921145491 + ... + 344921145596.

It is an arithmetic number, because the mean of its divisors is an integer number (9312870929688).

Almost surely, 2^{36561641427611} is an apocalyptic number.

36561641427611 is a deficient number, since it is larger than the sum of its proper divisors (689842291141).

36561641427611 is an equidigital number, since it uses as much as digits as its factorization.

36561641427611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689842291140.

The product of its digits is 4354560, while the sum is 53.

The spelling of 36561641427611 in words is "thirty-six trillion, five hundred sixty-one billion, six hundred forty-one million, four hundred twenty-seven thousand, six hundred eleven".