9978517333 has 4 divisors (see below), whose sum is σ = 9983175808. Its totient is φ = 9973858860.

The previous prime is 9978517321. The next prime is 9978517391. The reversal of 9978517333 is 3337158799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3337158799 = 13 ⋅256704523.

It is a cyclic number.

It is not a de Polignac number, because 9978517333 - 2¹³ = 9978509141 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 (9978517303) 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, 2326023 + ... + 2330308.

It is an arithmetic number, because the mean of its divisors is an integer number (2495793952).

Almost surely, 2^9978517333 is an apocalyptic number.

It is an amenable number.

9978517333 is a deficient number, since it is larger than the sum of its proper divisors (4658475).

9978517333 is a wasteful number, since it uses less digits than its factorization.

9978517333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658474.

The product of its digits is 4286520, while the sum is 55.

The square root of 9978517333 is about 99892.5289148293. The cubic root of 9978517333 is about 2152.8908171860.

The spelling of 9978517333 in words is "nine billion, nine hundred seventy-eight million, five hundred seventeen thousand, three hundred thirty-three".