2576778511 has 2 divisors, whose sum is σ = 2576778512. Its totient is φ = 2576778510.

The previous prime is 2576778473. The next prime is 2576778541. The reversal of 2576778511 is 1158776752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2576778511 - 2¹³ = 2576770319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2576778541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288389255 + 1288389256.

It is an arithmetic number, because the mean of its divisors is an integer number (1288389256).

Almost surely, 2^2576778511 is an apocalyptic number.

2576778511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2576778511 is an equidigital number, since it uses as much as digits as its factorization.

2576778511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823200, while the sum is 49.

The square root of 2576778511 is about 50761.9789901852. The cubic root of 2576778511 is about 1370.9628819782.

The spelling of 2576778511 in words is "two billion, five hundred seventy-six million, seven hundred seventy-eight thousand, five hundred eleven".