11787748617 has 8 divisors (see below), whose sum is σ = 15731704960. Its totient is φ = 7851145680.

The previous prime is 11787748547. The next prime is 11787748669. The reversal of 11787748617 is 71684778711.

It is a happy number.

11787748617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11787748617 - 2⁸ = 11787748361 is a prime.

It is a super-3 number, since 3×11787748617³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11787748417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834609 + ... + 1841022.

It is an arithmetic number, because the mean of its divisors is an integer number (1966463120).

Almost surely, 2^11787748617 is an apocalyptic number.

It is an amenable number.

11787748617 is a deficient number, since it is larger than the sum of its proper divisors (3943956343).

11787748617 is a wasteful number, since it uses less digits than its factorization.

11787748617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676703.

The product of its digits is 3687936, while the sum is 57.

The spelling of 11787748617 in words is "eleven billion, seven hundred eighty-seven million, seven hundred forty-eight thousand, six hundred seventeen".