9973545851 has 2 divisors, whose sum is σ = 9973545852. Its totient is φ = 9973545850.

The previous prime is 9973545847. The next prime is 9973545899. The reversal of 9973545851 is 1585453799.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9973545851 - 2² = 9973545847 is a prime.

It is not a weakly prime, because it can be changed into another prime (9973245851) 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 as a sum of consecutive naturals, namely, 4986772925 + 4986772926.

It is an arithmetic number, because the mean of its divisors is an integer number (4986772926).

Almost surely, 2^9973545851 is an apocalyptic number.

9973545851 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973545851 is an equidigital number, since it uses as much as digits as its factorization.

9973545851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804000, while the sum is 56.

The square root of 9973545851 is about 99867.6416613510. The cubic root of 9973545851 is about 2152.5332211101.

The spelling of 9973545851 in words is "nine billion, nine hundred seventy-three million, five hundred forty-five thousand, eight hundred fifty-one".