11140323551 has 4 divisors (see below), whose sum is σ = 12731798352. Its totient is φ = 9548848752.

The previous prime is 11140323547. The next prime is 11140323553. The reversal of 11140323551 is 15532304111.

11140323551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11140323551 - 2² = 11140323547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11140323551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140323553) 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 in 3 ways as a sum of consecutive naturals, for example, 795737390 + ... + 795737403.

It is an arithmetic number, because the mean of its divisors is an integer number (3182949588).

Almost surely, 2^11140323551 is an apocalyptic number.

11140323551 is a deficient number, since it is larger than the sum of its proper divisors (1591474801).

11140323551 is an equidigital number, since it uses as much as digits as its factorization.

11140323551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591474800.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 11140323551 its reverse (15532304111), we get a palindrome (26672627662).

The spelling of 11140323551 in words is "eleven billion, one hundred forty million, three hundred twenty-three thousand, five hundred fifty-one".