978975328805 has 16 divisors (see below), whose sum is σ = 1210382936064. Its totient is φ = 759733497600.

The previous prime is 978975328787. The next prime is 978975328817. The reversal of 978975328805 is 508823579879.

It is not a de Polignac number, because 978975328805 - 2⁸ = 978975328549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18406421 + ... + 18459530.

It is an arithmetic number, because the mean of its divisors is an integer number (75648933504).

Almost surely, 2^978975328805 is an apocalyptic number.

It is an amenable number.

978975328805 is a deficient number, since it is larger than the sum of its proper divisors (231407607259).

978975328805 is a wasteful number, since it uses less digits than its factorization.

978975328805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36866116.

The product of its (nonzero) digits is 304819200, while the sum is 71.

The spelling of 978975328805 in words is "nine hundred seventy-eight billion, nine hundred seventy-five million, three hundred twenty-eight thousand, eight hundred five".