11685693783 has 4 divisors (see below), whose sum is σ = 15580925048. Its totient is φ = 7790462520.

The previous prime is 11685693779. The next prime is 11685693791. The reversal of 11685693783 is 38739658611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38739658611 = 3 ⋅12913219537.

It is not a de Polignac number, because 11685693783 - 2² = 11685693779 is a prime.

It is a super-3 number, since 3×11685693783³ (a number of 31 digits) contains 333 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 (11685293783) 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, 1947615628 + ... + 1947615633.

It is an arithmetic number, because the mean of its divisors is an integer number (3895231262).

Almost surely, 2^11685693783 is an apocalyptic number.

11685693783 is a deficient number, since it is larger than the sum of its proper divisors (3895231265).

11685693783 is an equidigital number, since it uses as much as digits as its factorization.

11685693783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895231264.

The product of its digits is 6531840, while the sum is 57.

The spelling of 11685693783 in words is "eleven billion, six hundred eighty-five million, six hundred ninety-three thousand, seven hundred eighty-three".