9965394553 has 2 divisors, whose sum is σ = 9965394554. Its totient is φ = 9965394552.

The previous prime is 9965394547. The next prime is 9965394557. The reversal of 9965394553 is 3554935699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9391935744 + 573458809 = 96912^2 + 23947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9965394553 is a prime.

It is not a weakly prime, because it can be changed into another prime (9965394557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982697276 + 4982697277.

It is an arithmetic number, because the mean of its divisors is an integer number (4982697277).

Almost surely, 2^9965394553 is an apocalyptic number.

It is an amenable number.

9965394553 is a deficient number, since it is larger than the sum of its proper divisors (1).

9965394553 is an equidigital number, since it uses as much as digits as its factorization.

9965394553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19683000, while the sum is 58.

The square root of 9965394553 is about 99826.8228133101. The cubic root of 9965394553 is about 2151.9466453083.

The spelling of 9965394553 in words is "nine billion, nine hundred sixty-five million, three hundred ninety-four thousand, five hundred fifty-three".