9775552999 has 2 divisors, whose sum is σ = 9775553000. Its totient is φ = 9775552998.

The previous prime is 9775552967. The next prime is 9775553089. The reversal of 9775552999 is 9992555779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9775552999 - 2⁵ = 9775552967 is a prime.

It is a super-2 number, since 2×9775552999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9775552909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4887776499 + 4887776500.

It is an arithmetic number, because the mean of its divisors is an integer number (4887776500).

Almost surely, 2^9775552999 is an apocalyptic number.

9775552999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9775552999 is an equidigital number, since it uses as much as digits as its factorization.

9775552999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80372250, while the sum is 67.

The square root of 9775552999 is about 98871.3962630244. The cubic root of 9775552999 is about 2138.1940246425.

The spelling of 9775552999 in words is "nine billion, seven hundred seventy-five million, five hundred fifty-two thousand, nine hundred ninety-nine".