9997274543 has 4 divisors (see below), whose sum is σ = 10209982560. Its totient is φ = 9784566528.

The previous prime is 9997274531. The next prime is 9997274561. The reversal of 9997274543 is 3454727999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3454727999 = 37 ⋅93371027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997274543 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 (9997274843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106353938 + ... + 106354031.

It is an arithmetic number, because the mean of its divisors is an integer number (2552495640).

Almost surely, 2^9997274543 is an apocalyptic number.

9997274543 is a deficient number, since it is larger than the sum of its proper divisors (212708017).

9997274543 is a wasteful number, since it uses less digits than its factorization.

9997274543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212708016.

The product of its digits is 17146080, while the sum is 59.

The square root of 9997274543 is about 99986.3717863590. The cubic root of 9997274543 is about 2154.2389449441.

The spelling of 9997274543 in words is "nine billion, nine hundred ninety-seven million, two hundred seventy-four thousand, five hundred forty-three".