2785084982777 has 2 divisors, whose sum is σ = 2785084982778. Its totient is φ = 2785084982776.

The previous prime is 2785084982761. The next prime is 2785084982807. The reversal of 2785084982777 is 7772894805872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1529152354921 + 1255932627856 = 1236589^2 + 1120684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2785084982777 - 2⁴ = 2785084982761 is a prime.

It is a super-2 number, since 2×2785084982777² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2785084982077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392542491388 + 1392542491389.

It is an arithmetic number, because the mean of its divisors is an integer number (1392542491389).

Almost surely, 2^{2785084982777} is an apocalyptic number.

It is an amenable number.

2785084982777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785084982777 is an equidigital number, since it uses as much as digits as its factorization.

2785084982777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 885104640, while the sum is 74.

The spelling of 2785084982777 in words is "two trillion, seven hundred eighty-five billion, eighty-four million, nine hundred eighty-two thousand, seven hundred seventy-seven".