11687555803863 has 4 divisors (see below), whose sum is σ = 15583407738488. Its totient is φ = 7791703869240.

The previous prime is 11687555803823. The next prime is 11687555803939. The reversal of 11687555803863 is 36830855578611.

11687555803863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11687555803863 - 2⁶ = 11687555803799 is a prime.

It is a super-2 number, since 2×11687555803863² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11687555803794 and 11687555803803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687555803823) 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, 1947925967308 + ... + 1947925967313.

It is an arithmetic number, because the mean of its divisors is an integer number (3895851934622).

Almost surely, 2^{11687555803863} is an apocalyptic number.

11687555803863 is a deficient number, since it is larger than the sum of its proper divisors (3895851934625).

11687555803863 is an equidigital number, since it uses as much as digits as its factorization.

11687555803863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895851934624.

The product of its (nonzero) digits is 145152000, while the sum is 66.

The spelling of 11687555803863 in words is "eleven trillion, six hundred eighty-seven billion, five hundred fifty-five million, eight hundred three thousand, eight hundred sixty-three".