11561275232777 has 4 divisors (see below), whose sum is σ = 11561344273920. Its totient is φ = 11561206191636.

The previous prime is 11561275232761. The next prime is 11561275232789. The reversal of 11561275232777 is 77723257216511.

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.

It is a cyclic number.

It is not a de Polignac number, because 11561275232777 - 2⁴ = 11561275232761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11561275232477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34268777 + ... + 34604502.

It is an arithmetic number, because the mean of its divisors is an integer number (2890336068480).

Almost surely, 2^{11561275232777} is an apocalyptic number.

It is an amenable number.

11561275232777 is a deficient number, since it is larger than the sum of its proper divisors (69041143).

11561275232777 is an equidigital number, since it uses as much as digits as its factorization.

11561275232777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69041142.

The product of its digits is 8643600, while the sum is 56.

The spelling of 11561275232777 in words is "eleven trillion, five hundred sixty-one billion, two hundred seventy-five million, two hundred thirty-two thousand, seven hundred seventy-seven".