878776405043087 has 2 divisors, whose sum is σ = 878776405043088. Its totient is φ = 878776405043086.

The previous prime is 878776405043077. The next prime is 878776405043099. The reversal of 878776405043087 is 780340504677878.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878776405043087 - 2⁶ = 878776405043023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878776405043027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439388202521543 + 439388202521544.

It is an arithmetic number, because the mean of its divisors is an integer number (439388202521544).

Almost surely, 2^{878776405043087} is an apocalyptic number.

878776405043087 is a deficient number, since it is larger than the sum of its proper divisors (1).

878776405043087 is an equidigital number, since it uses as much as digits as its factorization.

878776405043087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1770209280, while the sum is 74.

The spelling of 878776405043087 in words is "eight hundred seventy-eight trillion, seven hundred seventy-six billion, four hundred five million, forty-three thousand, eighty-seven".