11242878551 has 2 divisors, whose sum is σ = 11242878552. Its totient is φ = 11242878550.

The previous prime is 11242878391. The next prime is 11242878611. The reversal of 11242878551 is 15587824211.

11242878551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11242878551 is a prime.

It is a super-3 number, since 3×11242878551³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11242878851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5621439275 + 5621439276.

It is an arithmetic number, because the mean of its divisors is an integer number (5621439276).

Almost surely, 2^11242878551 is an apocalyptic number.

11242878551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11242878551 is an equidigital number, since it uses as much as digits as its factorization.

11242878551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179200, while the sum is 44.

The spelling of 11242878551 in words is "eleven billion, two hundred forty-two million, eight hundred seventy-eight thousand, five hundred fifty-one".