978223858704 has 45 divisors (see below), whose sum is σ = 2737701376189. Its totient is φ = 326070663360.

The previous prime is 978223858649. The next prime is 978223858721. The reversal of 978223858704 is 407858322879.

The square root of 978223858704 is 989052.

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., 948777298704 + 29446560000 = 974052^2 + 171600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11827414 + ... + 11909834.

Almost surely, 2^978223858704 is an apocalyptic number.

978223858704 is the 989052-nd square number.

It is an amenable number.

978223858704 is an abundant number, since it is smaller than the sum of its proper divisors (1759477517485).

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

978223858704 is an frugal number, since it uses more digits than its factorization.

978223858704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164856 (or 82426 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 978223858704 in words is "nine hundred seventy-eight billion, two hundred twenty-three million, eight hundred fifty-eight thousand, seven hundred four".