11285320551 has 8 divisors (see below), whose sum is σ = 15048156144. Its totient is φ = 7523016000.

The previous prime is 11285320549. The next prime is 11285320577. The reversal of 11285320551 is 15502358211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11285320551 - 2¹ = 11285320549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11285320451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80200 + ... + 170301.

It is an arithmetic number, because the mean of its divisors is an integer number (1881019518).

Almost surely, 2^11285320551 is an apocalyptic number.

11285320551 is a deficient number, since it is larger than the sum of its proper divisors (3762835593).

11285320551 is a wasteful number, since it uses less digits than its factorization.

11285320551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265521.

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 11285320551 its reverse (15502358211), we get a palindrome (26787678762).

The spelling of 11285320551 in words is "eleven billion, two hundred eighty-five million, three hundred twenty thousand, five hundred fifty-one".