787868868779 has 2 divisors, whose sum is σ = 787868868780. Its totient is φ = 787868868778.

The previous prime is 787868868763. The next prime is 787868868791. The reversal of 787868868779 is 977868868787.

787868868779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 787868868779 - 2⁴ = 787868868763 is a prime.

It is a super-2 number, since 2×787868868779² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 787868868694 and 787868868703.

It is not a weakly prime, because it can be changed into another prime (787868868679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393934434389 + 393934434390.

It is an arithmetic number, because the mean of its divisors is an integer number (393934434390).

Almost surely, 2^787868868779 is an apocalyptic number.

787868868779 is a deficient number, since it is larger than the sum of its proper divisors (1).

787868868779 is an equidigital number, since it uses as much as digits as its factorization.

787868868779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25491013632, while the sum is 89.

The spelling of 787868868779 in words is "seven hundred eighty-seven billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, seven hundred seventy-nine".