787868868787 has 32 divisors (see below), whose sum is σ = 1080345176064. Its totient is φ = 554641430400.

The previous prime is 787868868779. The next prime is 787868868791.

787868868787 is nontrivially palindromic in base 10.

787868868787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 787868868787 - 2³ = 787868868779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 787868868698 and 787868868707.

It is not an unprimeable number, because it can be changed into a prime (787868868797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8326164 + ... + 8420257.

It is an arithmetic number, because the mean of its divisors is an integer number (33760786752).

Almost surely, 2^787868868787 is an apocalyptic number.

787868868787 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

787868868787 is a deficient number, since it is larger than the sum of its proper divisors (292476307277).

787868868787 is a wasteful number, since it uses less digits than its factorization.

787868868787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16746499.

The product of its digits is 22658678784, while the sum is 88.

The spelling of 787868868787 in words is "seven hundred eighty-seven billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, seven hundred eighty-seven".