4077778189249 has 2 divisors, whose sum is σ = 4077778189250. Its totient is φ = 4077778189248.

The previous prime is 4077778189231. The next prime is 4077778189271. The reversal of 4077778189249 is 9429818777704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2797105727025 + 1280672462224 = 1672455^2 + 1131668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4077778189249 is a prime.

It is not a weakly prime, because it can be changed into another prime (4077778189279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2038889094624 + 2038889094625.

It is an arithmetic number, because the mean of its divisors is an integer number (2038889094625).

Almost surely, 2^{4077778189249} is an apocalyptic number.

It is an amenable number.

4077778189249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4077778189249 is an equidigital number, since it uses as much as digits as its factorization.

4077778189249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 398297088, while the sum is 73.

The spelling of 4077778189249 in words is "four trillion, seventy-seven billion, seven hundred seventy-eight million, one hundred eighty-nine thousand, two hundred forty-nine".