9978914559364 has 27 divisors (see below), whose sum is σ = 17491084494597. Its totient is φ = 4981474633248.

The previous prime is 9978914559359. The next prime is 9978914559391. The reversal of 9978914559364 is 4639554198799.

It is a happy number.

The square root of 9978914559364 is 3158942.

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., 847397573764 + 9131516985600 = 920542^2 + 3021840^2 .

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, 7132890337 + ... + 7132891735.

Almost surely, 2^{9978914559364} is an apocalyptic number.

9978914559364 is the 3158942-nd square number.

It is an amenable number.

9978914559364 is a deficient number, since it is larger than the sum of its proper divisors (7512169935233).

9978914559364 is an frugal number, since it uses more digits than its factorization.

9978914559364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060 (or 2530 counting only the distinct ones).

The product of its digits is 2645395200, while the sum is 79.

The spelling of 9978914559364 in words is "nine trillion, nine hundred seventy-eight billion, nine hundred fourteen million, five hundred fifty-nine thousand, three hundred sixty-four".