978875578879 has 8 divisors (see below), whose sum is σ = 1093909738320. Its totient is φ = 868182331200.

The previous prime is 978875578867. The next prime is 978875578951.

978875578879 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978875578879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978875578879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978875578819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085227464 + ... + 1085228365.

It is an arithmetic number, because the mean of its divisors is an integer number (136738717290).

Almost surely, 2^978875578879 is an apocalyptic number.

978875578879 is a deficient number, since it is larger than the sum of its proper divisors (115034159441).

978875578879 is a wasteful number, since it uses less digits than its factorization.

978875578879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170455881.

The product of its digits is 19914854400, while the sum is 88.

The spelling of 978875578879 in words is "nine hundred seventy-eight billion, eight hundred seventy-five million, five hundred seventy-eight thousand, eight hundred seventy-nine".