2209773796541 has 2 divisors, whose sum is σ = 2209773796542. Its totient is φ = 2209773796540.

The previous prime is 2209773796519. The next prime is 2209773796553. The reversal of 2209773796541 is 1456973779022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2204123267641 + 5650528900 = 1484629^2 + 75170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209773796541 - 2³⁴ = 2192593927357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2209773796591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104886898270 + 1104886898271.

It is an arithmetic number, because the mean of its divisors is an integer number (1104886898271).

Almost surely, 2^{2209773796541} is an apocalyptic number.

It is an amenable number.

2209773796541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209773796541 is an equidigital number, since it uses as much as digits as its factorization.

2209773796541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40007520, while the sum is 62.

The spelling of 2209773796541 in words is "two trillion, two hundred nine billion, seven hundred seventy-three million, seven hundred ninety-six thousand, five hundred forty-one".