11451123602431 has 4 divisors (see below), whose sum is σ = 11451145333264. Its totient is φ = 11451101871600.

The previous prime is 11451123602353. The next prime is 11451123602447. The reversal of 11451123602431 is 13420632115411.

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-11451123602431 is a prime.

It is a super-2 number, since 2×11451123602431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11451123602231) 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, 10054830 + ... + 11135611.

It is an arithmetic number, because the mean of its divisors is an integer number (2862786333316).

Almost surely, 2^{11451123602431} is an apocalyptic number.

11451123602431 is a deficient number, since it is larger than the sum of its proper divisors (21730833).

11451123602431 is an equidigital number, since it uses as much as digits as its factorization.

11451123602431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21730832.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 11451123602431 its reverse (13420632115411), we get a palindrome (24871755717842).

The spelling of 11451123602431 in words is "eleven trillion, four hundred fifty-one billion, one hundred twenty-three million, six hundred two thousand, four hundred thirty-one".