978990554968 has 16 divisors (see below), whose sum is σ = 1943584190280. Its totient is φ = 460701437568.

The previous prime is 978990554957. The next prime is 978990554981. The reversal of 978990554968 is 869455099879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3599229846 + ... + 3599230117.

Almost surely, 2^978990554968 is an apocalyptic number.

It is an amenable number.

978990554968 is a deficient number, since it is larger than the sum of its proper divisors (964593635312).

978990554968 is a wasteful number, since it uses less digits than its factorization.

978990554968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7198459986 (or 7198459982 counting only the distinct ones).

The product of its (nonzero) digits is 1763596800, while the sum is 79.

The spelling of 978990554968 in words is "nine hundred seventy-eight billion, nine hundred ninety million, five hundred fifty-four thousand, nine hundred sixty-eight".