11131253551 has 12 divisors (see below), whose sum is σ = 12243873600. Its totient is φ = 10112131040.

The previous prime is 11131253543. The next prime is 11131253593. The reversal of 11131253551 is 15535213111.

It is not a de Polignac number, because 11131253551 - 2³ = 11131253543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131253501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142155 + ... + 206083.

It is an arithmetic number, because the mean of its divisors is an integer number (1020322800).

Almost surely, 2^11131253551 is an apocalyptic number.

11131253551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11131253551 is a deficient number, since it is larger than the sum of its proper divisors (1112620049).

11131253551 is a wasteful number, since it uses less digits than its factorization.

11131253551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65390 (or 65379 counting only the distinct ones).

The product of its digits is 2250, while the sum is 28.

Adding to 11131253551 its reverse (15535213111), we get a palindrome (26666466662).

The spelling of 11131253551 in words is "eleven billion, one hundred thirty-one million, two hundred fifty-three thousand, five hundred fifty-one".