2208728020049 has 2 divisors, whose sum is σ = 2208728020050. Its totient is φ = 2208728020048.

The previous prime is 2208728020003. The next prime is 2208728020069. The reversal of 2208728020049 is 9400208278022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1980380707600 + 228347312449 = 1407260^2 + 477857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2208728020049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2208728019991 and 2208728020009.

It is not a weakly prime, because it can be changed into another prime (2208728020069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104364010024 + 1104364010025.

It is an arithmetic number, because the mean of its divisors is an integer number (1104364010025).

Almost surely, 2^{2208728020049} is an apocalyptic number.

It is an amenable number.

2208728020049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208728020049 is an equidigital number, since it uses as much as digits as its factorization.

2208728020049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 2208728020049 in words is "two trillion, two hundred eight billion, seven hundred twenty-eight million, twenty thousand, forty-nine".