9978556303 has 4 divisors (see below), whose sum is σ = 10300445248. Its totient is φ = 9656667360.

The previous prime is 9978556277. The next prime is 9978556319. The reversal of 9978556303 is 3036558799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3036558799 = 173 ⋅17552363.

It is a cyclic number.

It is not a de Polignac number, because 9978556303 - 2⁵ = 9978556271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978556333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160944426 + ... + 160944487.

It is an arithmetic number, because the mean of its divisors is an integer number (2575111312).

Almost surely, 2^9978556303 is an apocalyptic number.

9978556303 is a deficient number, since it is larger than the sum of its proper divisors (321888945).

9978556303 is a wasteful number, since it uses less digits than its factorization.

9978556303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321888944.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The square root of 9978556303 is about 99892.7239742715. The cubic root of 9978556303 is about 2152.8936198083.

The spelling of 9978556303 in words is "nine billion, nine hundred seventy-eight million, five hundred fifty-six thousand, three hundred three".