52778002777 has 2 divisors, whose sum is σ = 52778002778. Its totient is φ = 52778002776.

The previous prime is 52778002729. The next prime is 52778002793. The reversal of 52778002777 is 77720087725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52470316096 + 307686681 = 229064^2 + 17541^2 .

It is a cyclic number.

It is not a de Polignac number, because 52778002777 - 2²⁷ = 52643785049 is a prime.

It is not a weakly prime, because it can be changed into another prime (52778042777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26389001388 + 26389001389.

It is an arithmetic number, because the mean of its divisors is an integer number (26389001389).

Almost surely, 2^52778002777 is an apocalyptic number.

It is an amenable number.

52778002777 is a deficient number, since it is larger than the sum of its proper divisors (1).

52778002777 is an equidigital number, since it uses as much as digits as its factorization.

52778002777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2689120, while the sum is 52.

The spelling of 52778002777 in words is "fifty-two billion, seven hundred seventy-eight million, two thousand, seven hundred seventy-seven".