78425878246 has 8 divisors (see below), whose sum is σ = 117640128384. Its totient is φ = 39212502120.

The previous prime is 78425878211. The next prime is 78425878291. The reversal of 78425878246 is 64287852487.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96856 + ... + 407716.

It is an arithmetic number, because the mean of its divisors is an integer number (14705016048).

Almost surely, 2^78425878246 is an apocalyptic number.

78425878246 is a deficient number, since it is larger than the sum of its proper divisors (39214250138).

78425878246 is a wasteful number, since it uses less digits than its factorization.

78425878246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437006.

The product of its digits is 48168960, while the sum is 61.

The spelling of 78425878246 in words is "seventy-eight billion, four hundred twenty-five million, eight hundred seventy-eight thousand, two hundred forty-six".