1128711660269 has 4 divisors (see below), whose sum is σ = 1129825887996. Its totient is φ = 1127597432544.

The previous prime is 1128711660227. The next prime is 1128711660311. The reversal of 1128711660269 is 9620661178211.

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

It is an interprime number because it is at equal distance from previous prime (1128711660227) and next prime (1128711660311).

It can be written as a sum of positive squares in 2 ways, for example, as 105047292100 + 1023664368169 = 324110^2 + 1011763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128711660269 - 2⁴⁰ = 29200032493 is a prime.

It is a super-2 number, since 2×1128711660269² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128711680269) 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, 557112344 + ... + 557114369.

It is an arithmetic number, because the mean of its divisors is an integer number (282456471999).

Almost surely, 2^{1128711660269} is an apocalyptic number.

It is an amenable number.

1128711660269 is a deficient number, since it is larger than the sum of its proper divisors (1114227727).

1128711660269 is a wasteful number, since it uses less digits than its factorization.

1128711660269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114227726.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 1128711660269 in words is "one trillion, one hundred twenty-eight billion, seven hundred eleven million, six hundred sixty thousand, two hundred sixty-nine".