2144247564661 has 8 divisors (see below), whose sum is σ = 2151345980480. Its totient is φ = 2137150727712.

The previous prime is 2144247564631. The next prime is 2144247564721. The reversal of 2144247564661 is 1664657424412.

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 2144247564661 - 2²⁹ = 2143710693749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144247564599 and 2144247564608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144247564631) 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, 2357656 + ... + 3137998.

It is an arithmetic number, because the mean of its divisors is an integer number (268918247560).

Almost surely, 2^{2144247564661} is an apocalyptic number.

It is an amenable number.

2144247564661 is a deficient number, since it is larger than the sum of its proper divisors (7098415819).

2144247564661 is an equidigital number, since it uses as much as digits as its factorization.

2144247564661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789435.

The product of its digits is 7741440, while the sum is 52.

The spelling of 2144247564661 in words is "two trillion, one hundred forty-four billion, two hundred forty-seven million, five hundred sixty-four thousand, six hundred sixty-one".