878765654329 has 2 divisors, whose sum is σ = 878765654330. Its totient is φ = 878765654328.

The previous prime is 878765654323. The next prime is 878765654339. The reversal of 878765654329 is 923456567878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 639304189225 + 239461465104 = 799565^2 + 489348^2 .

It is a cyclic number.

It is not a de Polignac number, because 878765654329 - 2⁵ = 878765654297 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (878765654323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439382827164 + 439382827165.

It is an arithmetic number, because the mean of its divisors is an integer number (439382827165).

Almost surely, 2^878765654329 is an apocalyptic number.

It is an amenable number.

878765654329 is a deficient number, since it is larger than the sum of its proper divisors (1).

878765654329 is an equidigital number, since it uses as much as digits as its factorization.

878765654329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 609638400, while the sum is 70.

The spelling of 878765654329 in words is "eight hundred seventy-eight billion, seven hundred sixty-five million, six hundred fifty-four thousand, three hundred twenty-nine".