78984546478 has 8 divisors (see below), whose sum is σ = 118478457720. Its totient is φ = 39491727240.

The previous prime is 78984546463. The next prime is 78984546523. The reversal of 78984546478 is 87464548987.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58453 + ... + 401728.

It is an arithmetic number, because the mean of its divisors is an integer number (14809807215).

Almost surely, 2^78984546478 is an apocalyptic number.

78984546478 is a deficient number, since it is larger than the sum of its proper divisors (39493911242).

78984546478 is a wasteful number, since it uses less digits than its factorization.

78984546478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546002.

The product of its digits is 433520640, while the sum is 70.

The spelling of 78984546478 in words is "seventy-eight billion, nine hundred eighty-four million, five hundred forty-six thousand, four hundred seventy-eight".