11543030451 has 12 divisors (see below), whose sum is σ = 17211113920. Its totient is φ = 7447116240.

The previous prime is 11543030393. The next prime is 11543030483. The reversal of 11543030451 is 15403034511.

It is a happy number.

11543030451 is a `hidden beast` number, since 1 + 154 + 30 + 30 + 451 = 666.

It is not a de Polignac number, because 11543030451 - 2¹⁹ = 11542506163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11543030491) 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, 20686156 + ... + 20686713.

Almost surely, 2^11543030451 is an apocalyptic number.

11543030451 is a deficient number, since it is larger than the sum of its proper divisors (5668083469).

11543030451 is a wasteful number, since it uses less digits than its factorization.

11543030451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41372906 (or 41372903 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 11543030451 its reverse (15403034511), we get a palindrome (26946064962).

The spelling of 11543030451 in words is "eleven billion, five hundred forty-three million, thirty thousand, four hundred fifty-one".