978845548879 has 4 divisors (see below), whose sum is σ = 1067831507880. Its totient is φ = 889859589880.

The previous prime is 978845548847. The next prime is 978845548907.

978845548879 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 978845548879 - 2⁵ = 978845548847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978845546879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44492979484 + ... + 44492979505.

It is an arithmetic number, because the mean of its divisors is an integer number (266957876970).

Almost surely, 2^978845548879 is an apocalyptic number.

978845548879 is a deficient number, since it is larger than the sum of its proper divisors (88985959001).

978845548879 is a wasteful number, since it uses less digits than its factorization.

978845548879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88985959000.

The product of its digits is 6502809600, while the sum is 82.

The spelling of 978845548879 in words is "nine hundred seventy-eight billion, eight hundred forty-five million, five hundred forty-eight thousand, eight hundred seventy-nine".