11565226203641 has 4 divisors (see below), whose sum is σ = 12616610403984. Its totient is φ = 10513842003300.

The previous prime is 11565226203637. The next prime is 11565226203683. The reversal of 11565226203641 is 14630262256511.

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 11565226203641 - 2² = 11565226203637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11565226203592 and 11565226203601.

It is not an unprimeable number, because it can be changed into a prime (11565226233641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525692100155 + ... + 525692100176.

It is an arithmetic number, because the mean of its divisors is an integer number (3154152600996).

Almost surely, 2^{11565226203641} is an apocalyptic number.

11565226203641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11565226203641 is a deficient number, since it is larger than the sum of its proper divisors (1051384200343).

11565226203641 is a wasteful number, since it uses less digits than its factorization.

11565226203641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051384200342.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 11565226203641 in words is "eleven trillion, five hundred sixty-five billion, two hundred twenty-six million, two hundred three thousand, six hundred forty-one".