878619796693 has 2 divisors, whose sum is σ = 878619796694. Its totient is φ = 878619796692.

The previous prime is 878619796597. The next prime is 878619796709. The reversal of 878619796693 is 396697916878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779295231729 + 99324564964 = 882777^2 + 315158^2 .

It is a cyclic number.

It is not a de Polignac number, because 878619796693 - 2⁹ = 878619796181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878619796193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439309898346 + 439309898347.

It is an arithmetic number, because the mean of its divisors is an integer number (439309898347).

Almost surely, 2^878619796693 is an apocalyptic number.

It is an amenable number.

878619796693 is a deficient number, since it is larger than the sum of its proper divisors (1).

878619796693 is an equidigital number, since it uses as much as digits as its factorization.

878619796693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481421312, while the sum is 79.

The spelling of 878619796693 in words is "eight hundred seventy-eight billion, six hundred nineteen million, seven hundred ninety-six thousand, six hundred ninety-three".