11320263551 has 4 divisors (see below), whose sum is σ = 11505841704. Its totient is φ = 11134685400.

The previous prime is 11320263469. The next prime is 11320263589. The reversal of 11320263551 is 15536202311.

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-11320263551 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 (11320260551) 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, 92788985 + ... + 92789106.

It is an arithmetic number, because the mean of its divisors is an integer number (2876460426).

Almost surely, 2^11320263551 is an apocalyptic number.

11320263551 is a deficient number, since it is larger than the sum of its proper divisors (185578153).

11320263551 is an equidigital number, since it uses as much as digits as its factorization.

11320263551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185578152.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 11320263551 its reverse (15536202311), we get a palindrome (26856465862).

The spelling of 11320263551 in words is "eleven billion, three hundred twenty million, two hundred sixty-three thousand, five hundred fifty-one".