878875385434243 has 2 divisors, whose sum is σ = 878875385434244. Its totient is φ = 878875385434242.

The previous prime is 878875385434177. The next prime is 878875385434271. The reversal of 878875385434243 is 342434583578878.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878875385434243 is a prime.

It is not a weakly prime, because it can be changed into another prime (878875388434243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439437692717121 + 439437692717122.

It is an arithmetic number, because the mean of its divisors is an integer number (439437692717122).

Almost surely, 2^{878875385434243} is an apocalyptic number.

878875385434243 is a deficient number, since it is larger than the sum of its proper divisors (1).

878875385434243 is an equidigital number, since it uses as much as digits as its factorization.

878875385434243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17340825600, while the sum is 79.

The spelling of 878875385434243 in words is "eight hundred seventy-eight trillion, eight hundred seventy-five billion, three hundred eighty-five million, four hundred thirty-four thousand, two hundred forty-three".