978667004176 has 45 divisors (see below), whose sum is σ = 1982378171109. Its totient is φ = 468014604288.

The previous prime is 978667004113. The next prime is 978667004279. The reversal of 978667004176 is 671400766879.

The square root of 978667004176 is 989276.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 926945328400 + 51721675776 = 962780^2 + 227424^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91008016 + ... + 91018768.

Almost surely, 2^978667004176 is an apocalyptic number.

978667004176 is the 989276-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978667004176

978667004176 is an abundant number, since it is smaller than the sum of its proper divisors (1003711166933).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978667004176 is an frugal number, since it uses more digits than its factorization.

978667004176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560 (or 10778 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 978667004176 in words is "nine hundred seventy-eight billion, six hundred sixty-seven million, four thousand, one hundred seventy-six".