878308774771 has 2 divisors, whose sum is σ = 878308774772. Its totient is φ = 878308774770.

The previous prime is 878308774729. The next prime is 878308774787. The reversal of 878308774771 is 177477803878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878308774771 - 2⁷ = 878308774643 is a prime.

It is a super-2 number, since 2×878308774771² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 878308774697 and 878308774706.

It is not a weakly prime, because it can be changed into another prime (878308774711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439154387385 + 439154387386.

It is an arithmetic number, because the mean of its divisors is an integer number (439154387386).

Almost surely, 2^878308774771 is an apocalyptic number.

878308774771 is a deficient number, since it is larger than the sum of its proper divisors (1).

878308774771 is an equidigital number, since it uses as much as digits as its factorization.

878308774771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103262208, while the sum is 67.

The spelling of 878308774771 in words is "eight hundred seventy-eight billion, three hundred eight million, seven hundred seventy-four thousand, seven hundred seventy-one".