2143663570657 has 8 divisors (see below), whose sum is σ = 2516114770496. Its totient is φ = 1787765757552.

The previous prime is 2143663570651. The next prime is 2143663570723. The reversal of 2143663570657 is 7560753663412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143663570657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143663570598 and 2143663570607.

It is not an unprimeable number, because it can be changed into a prime (2143663570651) 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 7 ways as a sum of consecutive naturals, for example, 4138346403 + ... + 4138346920.

It is an arithmetic number, because the mean of its divisors is an integer number (314514346312).

Almost surely, 2^{2143663570657} is an apocalyptic number.

It is an amenable number.

2143663570657 is a deficient number, since it is larger than the sum of its proper divisors (372451199839).

2143663570657 is an equidigital number, since it uses as much as digits as its factorization.

2143663570657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276693367.

The product of its (nonzero) digits is 19051200, while the sum is 55.

The spelling of 2143663570657 in words is "two trillion, one hundred forty-three billion, six hundred sixty-three million, five hundred seventy thousand, six hundred fifty-seven".