9999626633 has 2 divisors, whose sum is σ = 9999626634. Its totient is φ = 9999626632.

The previous prime is 9999626629. The next prime is 9999626639. The reversal of 9999626633 is 3366269999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9823188544 + 176438089 = 99112^2 + 13283^2 .

It is a cyclic number.

It is not a de Polignac number, because 9999626633 - 2² = 9999626629 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999626639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999813316 + 4999813317.

It is an arithmetic number, because the mean of its divisors is an integer number (4999813317).

Almost surely, 2^9999626633 is an apocalyptic number.

It is an amenable number.

9999626633 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999626633 is an equidigital number, since it uses as much as digits as its factorization.

9999626633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25509168, while the sum is 62.

The square root of 9999626633 is about 99998.1331475743. The cubic root of 9999626633 is about 2154.4078765376.

The spelling of 9999626633 in words is "nine billion, nine hundred ninety-nine million, six hundred twenty-six thousand, six hundred thirty-three".