9957968833 has 2 divisors, whose sum is σ = 9957968834. Its totient is φ = 9957968832.

The previous prime is 9957968789. The next prime is 9957968843. The reversal of 9957968833 is 3388697599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5042136064 + 4915832769 = 71008^2 + 70113^2 .

It is a cyclic number.

It is not a de Polignac number, because 9957968833 - 2¹⁷ = 9957837761 is a prime.

It is a super-2 number, since 2×9957968833² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9957968843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978984416 + 4978984417.

It is an arithmetic number, because the mean of its divisors is an integer number (4978984417).

Almost surely, 2^9957968833 is an apocalyptic number.

It is an amenable number.

9957968833 is a deficient number, since it is larger than the sum of its proper divisors (1).

9957968833 is an equidigital number, since it uses as much as digits as its factorization.

9957968833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 67.

The square root of 9957968833 is about 99789.6228723207. The cubic root of 9957968833 is about 2151.4120043596.

The spelling of 9957968833 in words is "nine billion, nine hundred fifty-seven million, nine hundred sixty-eight thousand, eight hundred thirty-three".