7800849490277 has 2 divisors, whose sum is σ = 7800849490278. Its totient is φ = 7800849490276.

The previous prime is 7800849490253. The next prime is 7800849490331. The reversal of 7800849490277 is 7720949480087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4382026302241 + 3418823188036 = 2093329^2 + 1849006^2 .

It is a cyclic number.

It is not a de Polignac number, because 7800849490277 - 2¹² = 7800849486181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7800849490177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900424745138 + 3900424745139.

It is an arithmetic number, because the mean of its divisors is an integer number (3900424745139).

Almost surely, 2^{7800849490277} is an apocalyptic number.

It is an amenable number.

7800849490277 is a deficient number, since it is larger than the sum of its proper divisors (1).

7800849490277 is an equidigital number, since it uses as much as digits as its factorization.

7800849490277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56899584, while the sum is 65.

The spelling of 7800849490277 in words is "seven trillion, eight hundred billion, eight hundred forty-nine million, four hundred ninety thousand, two hundred seventy-seven".