11771765947713 has 16 divisors (see below), whose sum is σ = 16521864929280. Its totient is φ = 7434759873744.

The previous prime is 11771765947699. The next prime is 11771765947717. The reversal of 11771765947713 is 31774956717711.

It is a de Polignac number, because none of the positive numbers 2^k-11771765947713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11771765947717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13215820 + ... + 14078402.

It is an arithmetic number, because the mean of its divisors is an integer number (1032616558080).

Almost surely, 2^{11771765947713} is an apocalyptic number.

It is an amenable number.

11771765947713 is a deficient number, since it is larger than the sum of its proper divisors (4750098981567).

11771765947713 is a wasteful number, since it uses less digits than its factorization.

11771765947713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102028.

The product of its digits is 54454680, while the sum is 66.

The spelling of 11771765947713 in words is "eleven trillion, seven hundred seventy-one billion, seven hundred sixty-five million, nine hundred forty-seven thousand, seven hundred thirteen".