78854944945887 has 24 divisors (see below), whose sum is σ = 125163257029200. Its totient is φ = 47442037207680.

The previous prime is 78854944945877. The next prime is 78854944945891.

78854944945887 is a `hidden beast` number, since 7 + 8 + 8 + 5 + 49 + 449 + 45 + 8 + 87 = 666.

78854944945887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78854944945887 - 2⁶ = 78854944945823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78854944945797 and 78854944945806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78854944945877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2906974012 + ... + 2907001137.

It is an arithmetic number, because the mean of its divisors is an integer number (5215135709550).

Almost surely, 2^{78854944945887} is an apocalyptic number.

78854944945887 is a deficient number, since it is larger than the sum of its proper divisors (46308312083313).

78854944945887 is a wasteful number, since it uses less digits than its factorization.

78854944945887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813975303 (or 5813975300 counting only the distinct ones).

The product of its digits is 104044953600, while the sum is 90.

The spelling of 78854944945887 in words is "seventy-eight trillion, eight hundred fifty-four billion, nine hundred forty-four million, nine hundred forty-five thousand, eight hundred eighty-seven".