879746808647978 has 8 divisors (see below), whose sum is σ = 1320284339909472. Its totient is φ = 439652028678156.

The previous prime is 879746808647963. The next prime is 879746808647983.

879746808647978 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110687817950 + ... + 110687825897.

It is an arithmetic number, because the mean of its divisors is an integer number (165035542488684).

Almost surely, 2^{879746808647978} is an apocalyptic number.

879746808647978 is a deficient number, since it is larger than the sum of its proper divisors (440537531261494).

879746808647978 is a wasteful number, since it uses less digits than its factorization.

879746808647978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221375645836.

The product of its (nonzero) digits is 458838245376, while the sum is 98.

The spelling of 879746808647978 in words is "eight hundred seventy-nine trillion, seven hundred forty-six billion, eight hundred eight million, six hundred forty-seven thousand, nine hundred seventy-eight".