11531454051 has 16 divisors (see below), whose sum is σ = 16636471040. Its totient is φ = 7062642720.

The previous prime is 11531454031. The next prime is 11531454101. The reversal of 11531454051 is 15045413511.

It is not a de Polignac number, because 11531454051 - 2⁵ = 11531454019 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11531454001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692431 + ... + 708888.

It is an arithmetic number, because the mean of its divisors is an integer number (1039779440).

Almost surely, 2^11531454051 is an apocalyptic number.

11531454051 is a deficient number, since it is larger than the sum of its proper divisors (5105016989).

11531454051 is a wasteful number, since it uses less digits than its factorization.

11531454051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401546.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 11531454051 its reverse (15045413511), we get a palindrome (26576867562).

The spelling of 11531454051 in words is "eleven billion, five hundred thirty-one million, four hundred fifty-four thousand, fifty-one".