11075312551 has 4 divisors (see below), whose sum is σ = 11075546232. Its totient is φ = 11075078872.

The previous prime is 11075312531. The next prime is 11075312597. The reversal of 11075312551 is 15521357011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11075312551 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 (11075312531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17716 + ... + 149881.

It is an arithmetic number, because the mean of its divisors is an integer number (2768886558).

Almost surely, 2^11075312551 is an apocalyptic number.

11075312551 is a deficient number, since it is larger than the sum of its proper divisors (233681).

11075312551 is an equidigital number, since it uses as much as digits as its factorization.

11075312551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233680.

The product of its (nonzero) digits is 5250, while the sum is 31.

Adding to 11075312551 its reverse (15521357011), we get a palindrome (26596669562).

The spelling of 11075312551 in words is "eleven billion, seventy-five million, three hundred twelve thousand, five hundred fifty-one".