11703128761 has 9 divisors (see below), whose sum is σ = 11777265829. Its totient is φ = 11629457500.

The previous prime is 11703128737. The next prime is 11703128771. The reversal of 11703128761 is 16782130711.

The square root of 11703128761 is 108181.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11703128761 - 2¹¹ = 11703126713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11703128761.

It is not an unprimeable number, because it can be changed into a prime (11703128771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27153216 + ... + 27153646.

Almost surely, 2^11703128761 is an apocalyptic number.

11703128761 is the 108181-st square number.

11703128761 is the 54091-st centered octagonal number.

It is an amenable number.

11703128761 is a deficient number, since it is larger than the sum of its proper divisors (74137068).

11703128761 is an frugal number, since it uses more digits than its factorization.

11703128761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 11703128761 in words is "eleven billion, seven hundred three million, one hundred twenty-eight thousand, seven hundred sixty-one".