11451146646431 has 4 divisors (see below), whose sum is σ = 11846013772200. Its totient is φ = 11056279520664.

The previous prime is 11451146646413. The next prime is 11451146646437. The reversal of 11451146646431 is 13464664115411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11451146646431 - 2⁴² = 7053100135327 is a prime.

It is a super-2 number, since 2×11451146646431² (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 (11451146646437) 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, 197433562841 + ... + 197433562898.

It is an arithmetic number, because the mean of its divisors is an integer number (2961503443050).

Almost surely, 2^{11451146646431} is an apocalyptic number.

11451146646431 is a deficient number, since it is larger than the sum of its proper divisors (394867125769).

11451146646431 is an equidigital number, since it uses as much as digits as its factorization.

11451146646431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394867125768.

The product of its digits is 829440, while the sum is 47.

The spelling of 11451146646431 in words is "eleven trillion, four hundred fifty-one billion, one hundred forty-six million, six hundred forty-six thousand, four hundred thirty-one".