11344440551 has 2 divisors, whose sum is σ = 11344440552. Its totient is φ = 11344440550.

The previous prime is 11344440539. The next prime is 11344440617. The reversal of 11344440551 is 15504444311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11344440551 - 2¹⁸ = 11344178407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11344440521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5672220275 + 5672220276.

It is an arithmetic number, because the mean of its divisors is an integer number (5672220276).

Almost surely, 2^11344440551 is an apocalyptic number.

11344440551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11344440551 is an equidigital number, since it uses as much as digits as its factorization.

11344440551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 11344440551 its reverse (15504444311), we get a palindrome (26848884862).

The spelling of 11344440551 in words is "eleven billion, three hundred forty-four million, four hundred forty thousand, five hundred fifty-one".