10140043664605 has 4 divisors (see below), whose sum is σ = 12168052397532. Its totient is φ = 8112034931680.

The previous prime is 10140043664579. The next prime is 10140043664609. The reversal of 10140043664605 is 50646634004101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5439394727001 + 4700648937604 = 2332251^2 + 2168098^2 .

It is not a de Polignac number, because 10140043664605 - 2⁵ = 10140043664573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10140043664609) 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, 1014004366456 + ... + 1014004366465.

It is an arithmetic number, because the mean of its divisors is an integer number (3042013099383).

Almost surely, 2^{10140043664605} is an apocalyptic number.

It is an amenable number.

10140043664605 is a deficient number, since it is larger than the sum of its proper divisors (2028008732927).

10140043664605 is an equidigital number, since it uses as much as digits as its factorization.

10140043664605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028008732926.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 10140043664605 its reverse (50646634004101), we get a palindrome (60786677668706).

The spelling of 10140043664605 in words is "ten trillion, one hundred forty billion, forty-three million, six hundred sixty-four thousand, six hundred five".