9955533377 has 2 divisors, whose sum is σ = 9955533378. Its totient is φ = 9955533376.

The previous prime is 9955533331. The next prime is 9955533383. The reversal of 9955533377 is 7733355599.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9058470976 + 897062401 = 95176^2 + 29951^2 .

It is an emirp because it is prime and its reverse (7733355599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9955533377 - 2¹² = 9955529281 is a prime.

It is a super-2 number, since 2×9955533377² (a number of 21 digits) contains 22 as substring.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (9955533307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977766688 + 4977766689.

It is an arithmetic number, because the mean of its divisors is an integer number (4977766689).

Almost surely, 2^9955533377 is an apocalyptic number.

It is an amenable number.

9955533377 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955533377 is an equidigital number, since it uses as much as digits as its factorization.

9955533377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13395375, while the sum is 56.

The square root of 9955533377 is about 99777.4191738792. The cubic root of 9955533377 is about 2151.2365972198.

The spelling of 9955533377 in words is "nine billion, nine hundred fifty-five million, five hundred thirty-three thousand, three hundred seventy-seven".