9721373743 has 2 divisors, whose sum is σ = 9721373744. Its totient is φ = 9721373742.

The previous prime is 9721373723. The next prime is 9721373771. The reversal of 9721373743 is 3473731279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9721373743 - 2⁹ = 9721373231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9721373693 and 9721373702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9721373713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860686871 + 4860686872.

It is an arithmetic number, because the mean of its divisors is an integer number (4860686872).

Almost surely, 2^9721373743 is an apocalyptic number.

9721373743 is a deficient number, since it is larger than the sum of its proper divisors (1).

9721373743 is an equidigital number, since it uses as much as digits as its factorization.

9721373743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 46.

The square root of 9721373743 is about 98597.0270495008. The cubic root of 9721373743 is about 2134.2365182311.

The spelling of 9721373743 in words is "nine billion, seven hundred twenty-one million, three hundred seventy-three thousand, seven hundred forty-three".