2109144245653 has 8 divisors (see below), whose sum is σ = 2112966896696. Its totient is φ = 2105322840000.

The previous prime is 2109144245641. The next prime is 2109144245693. The reversal of 2109144245653 is 3565424419012.

It can be written as a sum of positive squares in 4 ways, for example, as 57036425329 + 2052107820324 = 238823^2 + 1432518^2 .

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 2109144245653 - 2⁹ = 2109144245141 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 (2109144245693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3112903 + ... + 3729403.

It is an arithmetic number, because the mean of its divisors is an integer number (264120862087).

Almost surely, 2^{2109144245653} is an apocalyptic number.

It is an amenable number.

2109144245653 is a deficient number, since it is larger than the sum of its proper divisors (3822651043).

2109144245653 is an equidigital number, since it uses as much as digits as its factorization.

2109144245653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622695.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 2109144245653 in words is "two trillion, one hundred nine billion, one hundred forty-four million, two hundred forty-five thousand, six hundred fifty-three".