11717792347885 has 16 divisors (see below), whose sum is σ = 15230524955184. Its totient is φ = 8603120812032.

The previous prime is 11717792347879. The next prime is 11717792347949. The reversal of 11717792347885 is 58874329771711.

It can be written as a sum of positive squares in 8 ways, for example, as 198101547396 + 11519690800489 = 445086^2 + 3394067^2 .

It is a cyclic number.

It is not a de Polignac number, because 11717792347885 - 2⁷ = 11717792347757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 521011092 + ... + 521033581.

It is an arithmetic number, because the mean of its divisors is an integer number (951907809699).

Almost surely, 2^{11717792347885} is an apocalyptic number.

It is an amenable number.

11717792347885 is a deficient number, since it is larger than the sum of its proper divisors (3512732607299).

11717792347885 is a wasteful number, since it uses less digits than its factorization.

11717792347885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042044864.

The product of its digits is 165957120, while the sum is 70.

The spelling of 11717792347885 in words is "eleven trillion, seven hundred seventeen billion, seven hundred ninety-two million, three hundred forty-seven thousand, eight hundred eighty-five".