8069781863 has 16 divisors (see below), whose sum is σ = 9892786176. Its totient is φ = 6477414240.

The previous prime is 8069781851. The next prime is 8069781911. The reversal of 8069781863 is 3681879608.

It is a happy number.

It is not a de Polignac number, because 8069781863 - 2⁴ = 8069781847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8069781799 and 8069781808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8069781163) 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, 1223495 + ... + 1230072.

It is an arithmetic number, because the mean of its divisors is an integer number (618299136).

Almost surely, 2^8069781863 is an apocalyptic number.

8069781863 is a deficient number, since it is larger than the sum of its proper divisors (1823004313).

8069781863 is a wasteful number, since it uses less digits than its factorization.

8069781863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453614.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 8069781863 is about 89831.9645950148. The cubic root of 8069781863 is about 2005.7983286969.

The spelling of 8069781863 in words is "eight billion, sixty-nine million, seven hundred eighty-one thousand, eight hundred sixty-three".