2143214090561 has 2 divisors, whose sum is σ = 2143214090562. Its totient is φ = 2143214090560.

The previous prime is 2143214090557. The next prime is 2143214090569. The reversal of 2143214090561 is 1650904123412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2085875393536 + 57338697025 = 1444256^2 + 239455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143214090561 - 2² = 2143214090557 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143214090569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071607045280 + 1071607045281.

It is an arithmetic number, because the mean of its divisors is an integer number (1071607045281).

Almost surely, 2^{2143214090561} is an apocalyptic number.

It is an amenable number.

2143214090561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143214090561 is an equidigital number, since it uses as much as digits as its factorization.

2143214090561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 2143214090561 in words is "two trillion, one hundred forty-three billion, two hundred fourteen million, ninety thousand, five hundred sixty-one".