878428149047 has 2 divisors, whose sum is σ = 878428149048. Its totient is φ = 878428149046.

The previous prime is 878428149019. The next prime is 878428149059. The reversal of 878428149047 is 740941824878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878428149047 - 2³⁸ = 603550242103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878428149847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439214074523 + 439214074524.

It is an arithmetic number, because the mean of its divisors is an integer number (439214074524).

Almost surely, 2^878428149047 is an apocalyptic number.

878428149047 is a deficient number, since it is larger than the sum of its proper divisors (1).

878428149047 is an equidigital number, since it uses as much as digits as its factorization.

878428149047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28901376, while the sum is 62.

The spelling of 878428149047 in words is "eight hundred seventy-eight billion, four hundred twenty-eight million, one hundred forty-nine thousand, forty-seven".