13553748077761 has 4 divisors (see below), whose sum is σ = 13553760845524. Its totient is φ = 13553735310000.

The previous prime is 13553748077711. The next prime is 13553748077827. The reversal of 13553748077761 is 16777084735531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8517175296400 + 5036572781361 = 2918420^2 + 2244231^2 .

It is a cyclic number.

It is not a de Polignac number, because 13553748077761 - 2⁴¹ = 11354724822209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13553748077693 and 13553748077702.

It is not an unprimeable number, because it can be changed into a prime (13553748077711) 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, 4631130 + ... + 6968131.

It is an arithmetic number, because the mean of its divisors is an integer number (3388440211381).

Almost surely, 2^{13553748077761} is an apocalyptic number.

It is an amenable number.

13553748077761 is a deficient number, since it is larger than the sum of its proper divisors (12767763).

13553748077761 is a wasteful number, since it uses less digits than its factorization.

13553748077761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767762.

The product of its (nonzero) digits is 103723200, while the sum is 64.

The spelling of 13553748077761 in words is "thirteen trillion, five hundred fifty-three billion, seven hundred forty-eight million, seventy-seven thousand, seven hundred sixty-one".