2778550760819 has 2 divisors, whose sum is σ = 2778550760820. Its totient is φ = 2778550760818.

The previous prime is 2778550760803. The next prime is 2778550760897. The reversal of 2778550760819 is 9180670558772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2778550760819 - 2⁴ = 2778550760803 is a prime.

It is a super-2 number, since 2×2778550760819² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2778550760899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389275380409 + 1389275380410.

It is an arithmetic number, because the mean of its divisors is an integer number (1389275380410).

Almost surely, 2^{2778550760819} is an apocalyptic number.

2778550760819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778550760819 is an equidigital number, since it uses as much as digits as its factorization.

2778550760819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59270400, while the sum is 65.

The spelling of 2778550760819 in words is "two trillion, seven hundred seventy-eight billion, five hundred fifty million, seven hundred sixty thousand, eight hundred nineteen".