11115343451 has 4 divisors (see below), whose sum is σ = 11129723712. Its totient is φ = 11100963192.

The previous prime is 11115343439. The next prime is 11115343507. The reversal of 11115343451 is 15434351111.

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-11115343451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11115349451) 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, 7188971 + ... + 7190516.

It is an arithmetic number, because the mean of its divisors is an integer number (2782430928).

Almost surely, 2^11115343451 is an apocalyptic number.

11115343451 is a deficient number, since it is larger than the sum of its proper divisors (14380261).

11115343451 is an equidigital number, since it uses as much as digits as its factorization.

11115343451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14380260.

The product of its digits is 3600, while the sum is 29.

Adding to 11115343451 its reverse (15434351111), we get a palindrome (26549694562).

The spelling of 11115343451 in words is "eleven billion, one hundred fifteen million, three hundred forty-three thousand, four hundred fifty-one".