9947151653 has 2 divisors, whose sum is σ = 9947151654. Its totient is φ = 9947151652.

The previous prime is 9947151649. The next prime is 9947151679. The reversal of 9947151653 is 3561517499.

9947151653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8617965889 + 1329185764 = 92833^2 + 36458^2 .

It is an emirp because it is prime and its reverse (3561517499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9947151653 - 2² = 9947151649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947151553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973575826 + 4973575827.

It is an arithmetic number, because the mean of its divisors is an integer number (4973575827).

Almost surely, 2^9947151653 is an apocalyptic number.

It is an amenable number.

9947151653 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947151653 is an equidigital number, since it uses as much as digits as its factorization.

9947151653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 50.

The square root of 9947151653 is about 99735.4082209523. The cubic root of 9947151653 is about 2150.6327074592.

The spelling of 9947151653 in words is "nine billion, nine hundred forty-seven million, one hundred fifty-one thousand, six hundred fifty-three".