978890098879 has 32 divisors (see below), whose sum is σ = 1246682658816. Its totient is φ = 746538148320.

The previous prime is 978890098873. The next prime is 978890098919.

978890098879 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 978890098879 - 2⁵ = 978890098847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978890098873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31897 + ... + 1399570.

It is an arithmetic number, because the mean of its divisors is an integer number (38958833088).

Almost surely, 2^978890098879 is an apocalyptic number.

978890098879 is a deficient number, since it is larger than the sum of its proper divisors (267792559937).

978890098879 is a wasteful number, since it uses less digits than its factorization.

978890098879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431675.

The product of its (nonzero) digits is 1316818944, while the sum is 82.

The spelling of 978890098879 in words is "nine hundred seventy-eight billion, eight hundred ninety million, ninety-eight thousand, eight hundred seventy-nine".