11772550451 has 2 divisors, whose sum is σ = 11772550452. Its totient is φ = 11772550450.

The previous prime is 11772550417. The next prime is 11772550453. The reversal of 11772550451 is 15405527711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11772550451 is a prime.

Together with 11772550453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11772550453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886275225 + 5886275226.

It is an arithmetic number, because the mean of its divisors is an integer number (5886275226).

Almost surely, 2^11772550451 is an apocalyptic number.

11772550451 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772550451 is an equidigital number, since it uses as much as digits as its factorization.

11772550451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49000, while the sum is 38.

The spelling of 11772550451 in words is "eleven billion, seven hundred seventy-two million, five hundred fifty thousand, four hundred fifty-one".