2576778551 has 2 divisors, whose sum is σ = 2576778552. Its totient is φ = 2576778550.

The previous prime is 2576778541. The next prime is 2576778577. The reversal of 2576778551 is 1558776752.

2576778551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2576778551 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2576778493 and 2576778502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2576778511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288389275 + 1288389276.

It is an arithmetic number, because the mean of its divisors is an integer number (1288389276).

Almost surely, 2^2576778551 is an apocalyptic number.

2576778551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2576778551 is an equidigital number, since it uses as much as digits as its factorization.

2576778551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4116000, while the sum is 53.

The square root of 2576778551 is about 50761.9793841808. The cubic root of 2576778551 is about 1370.9628890722.

The spelling of 2576778551 in words is "two billion, five hundred seventy-six million, seven hundred seventy-eight thousand, five hundred fifty-one".