878767676497 has 2 divisors, whose sum is σ = 878767676498. Its totient is φ = 878767676496.

The previous prime is 878767676477. The next prime is 878767676543. The reversal of 878767676497 is 794676767878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839292344641 + 39475331856 = 916129^2 + 198684^2 .

It is a cyclic number.

It is not a de Polignac number, because 878767676497 - 2¹⁹ = 878767152209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878767676497.

It is not a weakly prime, because it can be changed into another prime (878767676477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439383838248 + 439383838249.

It is an arithmetic number, because the mean of its divisors is an integer number (439383838249).

Almost surely, 2^878767676497 is an apocalyptic number.

It is an amenable number.

878767676497 is a deficient number, since it is larger than the sum of its proper divisors (1).

878767676497 is an equidigital number, since it uses as much as digits as its factorization.

878767676497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8364238848, while the sum is 82.

The spelling of 878767676497 in words is "eight hundred seventy-eight billion, seven hundred sixty-seven million, six hundred seventy-six thousand, four hundred ninety-seven".