1144631026405 has 8 divisors (see below), whose sum is σ = 1373754142872. Its totient is φ = 915573547008.

The previous prime is 1144631026379. The next prime is 1144631026421. The reversal of 1144631026405 is 5046201364411.

It can be written as a sum of positive squares in 4 ways, for example, as 132518568961 + 1012112457444 = 364031^2 + 1006038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144631026405 - 2⁷ = 1144631026277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16370892 + ... + 16440661.

It is an arithmetic number, because the mean of its divisors is an integer number (171719267859).

Almost surely, 2^{1144631026405} is an apocalyptic number.

It is an amenable number.

1144631026405 is a deficient number, since it is larger than the sum of its proper divisors (229123116467).

1144631026405 is an equidigital number, since it uses as much as digits as its factorization.

1144631026405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32818535.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 1144631026405 in words is "one trillion, one hundred forty-four billion, six hundred thirty-one million, twenty-six thousand, four hundred five".