878346999097 has 2 divisors, whose sum is σ = 878346999098. Its totient is φ = 878346999096.

The previous prime is 878346999077. The next prime is 878346999331. The reversal of 878346999097 is 790999643878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606138545401 + 272208453696 = 778549^2 + 521736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878346999097 is a prime.

It is not a weakly prime, because it can be changed into another prime (878346999077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439173499548 + 439173499549.

It is an arithmetic number, because the mean of its divisors is an integer number (439173499549).

Almost surely, 2^878346999097 is an apocalyptic number.

It is an amenable number.

878346999097 is a deficient number, since it is larger than the sum of its proper divisors (1).

878346999097 is an equidigital number, since it uses as much as digits as its factorization.

878346999097 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 878346999097 in words is "eight hundred seventy-eight billion, three hundred forty-six million, nine hundred ninety-nine thousand, ninety-seven".