11005232857 has 2 divisors, whose sum is σ = 11005232858. Its totient is φ = 11005232856.

The previous prime is 11005232831. The next prime is 11005232867. The reversal of 11005232857 is 75823250011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9358821081 + 1646411776 = 96741^2 + 40576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11005232857 is a prime.

It is a super-2 number, since 2×11005232857² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11005232867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502616428 + 5502616429.

It is an arithmetic number, because the mean of its divisors is an integer number (5502616429).

Almost surely, 2^11005232857 is an apocalyptic number.

It is an amenable number.

11005232857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005232857 is an equidigital number, since it uses as much as digits as its factorization.

11005232857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 11005232857 its reverse (75823250011), we get a palindrome (86828482868).

The spelling of 11005232857 in words is "eleven billion, five million, two hundred thirty-two thousand, eight hundred fifty-seven".