2143626626431 has 4 divisors (see below), whose sum is σ = 2149597731600. Its totient is φ = 2137655521264.

The previous prime is 2143626626389. The next prime is 2143626626441. The reversal of 2143626626431 is 1346266263412.

It is a happy number.

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 2143626626431 - 2¹⁵ = 2143626593663 is a prime.

It is a super-2 number, since 2×2143626626431² (a number of 25 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 (2143626626441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2985552046 + ... + 2985552763.

It is an arithmetic number, because the mean of its divisors is an integer number (537399432900).

Almost surely, 2^{2143626626431} is an apocalyptic number.

2143626626431 is a deficient number, since it is larger than the sum of its proper divisors (5971105169).

2143626626431 is an equidigital number, since it uses as much as digits as its factorization.

2143626626431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971105168.

The product of its digits is 1492992, while the sum is 46.

The spelling of 2143626626431 in words is "two trillion, one hundred forty-three billion, six hundred twenty-six million, six hundred twenty-six thousand, four hundred thirty-one".