78468417185047 has 2 divisors, whose sum is σ = 78468417185048. Its totient is φ = 78468417185046.

The previous prime is 78468417185003. The next prime is 78468417185099. The reversal of 78468417185047 is 74058171486487.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78468417185047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78468417185447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39234208592523 + 39234208592524.

It is an arithmetic number, because the mean of its divisors is an integer number (39234208592524).

Almost surely, 2^{78468417185047} is an apocalyptic number.

78468417185047 is a deficient number, since it is larger than the sum of its proper divisors (1).

78468417185047 is an equidigital number, since it uses as much as digits as its factorization.

78468417185047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 337182720, while the sum is 70.

The spelling of 78468417185047 in words is "seventy-eight trillion, four hundred sixty-eight billion, four hundred seventeen million, one hundred eighty-five thousand, forty-seven".