9973284773506 has 4 divisors (see below), whose sum is σ = 14959927160262. Its totient is φ = 4986642386752.

The previous prime is 9973284773489. The next prime is 9973284773509. The reversal of 9973284773506 is 6053774823799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7502619506281 + 2470665267225 = 2739091^2 + 1571835^2 .

It is not an unprimeable number, because it can be changed into a prime (9973284773509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493321193375 + ... + 2493321193378.

Almost surely, 2^{9973284773506} is an apocalyptic number.

9973284773506 is a deficient number, since it is larger than the sum of its proper divisors (4986642386756).

9973284773506 is a wasteful number, since it uses less digits than its factorization.

9973284773506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986642386755.

The product of its (nonzero) digits is 480090240, while the sum is 70.

The spelling of 9973284773506 in words is "nine trillion, nine hundred seventy-three billion, two hundred eighty-four million, seven hundred seventy-three thousand, five hundred six".