11551100447 has 2 divisors, whose sum is σ = 11551100448. Its totient is φ = 11551100446.

The previous prime is 11551100389. The next prime is 11551100453. The reversal of 11551100447 is 74400115511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11551100447 - 2⁶ = 11551100383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11551100497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775550223 + 5775550224.

It is an arithmetic number, because the mean of its divisors is an integer number (5775550224).

Almost surely, 2^11551100447 is an apocalyptic number.

11551100447 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551100447 is an equidigital number, since it uses as much as digits as its factorization.

11551100447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

Adding to 11551100447 its reverse (74400115511), we get a palindrome (85951215958).

The spelling of 11551100447 in words is "eleven billion, five hundred fifty-one million, one hundred thousand, four hundred forty-seven".