878765676787 has 2 divisors, whose sum is σ = 878765676788. Its totient is φ = 878765676786.

The previous prime is 878765676781. The next prime is 878765676809. The reversal of 878765676787 is 787676567878.

878765676787 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878765676787 - 2³ = 878765676779 is a prime.

It is a super-2 number, since 2×878765676787² (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 878765676787.

It is not a weakly prime, because it can be changed into another prime (878765676781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439382838393 + 439382838394.

It is an arithmetic number, because the mean of its divisors is an integer number (439382838394).

Almost surely, 2^878765676787 is an apocalyptic number.

878765676787 is a deficient number, since it is larger than the sum of its proper divisors (1).

878765676787 is an equidigital number, since it uses as much as digits as its factorization.

878765676787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9293598720, while the sum is 82.

The spelling of 878765676787 in words is "eight hundred seventy-eight billion, seven hundred sixty-five million, six hundred seventy-six thousand, seven hundred eighty-seven".