2878752776689 has 2 divisors, whose sum is σ = 2878752776690. Its totient is φ = 2878752776688.

The previous prime is 2878752776587. The next prime is 2878752776729. The reversal of 2878752776689 is 9866772578782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1511957966689 + 1366794810000 = 1229617^2 + 1169100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878752776689 - 2⁷ = 2878752776561 is a prime.

It is not a weakly prime, because it can be changed into another prime (2878752776789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439376388344 + 1439376388345.

It is an arithmetic number, because the mean of its divisors is an integer number (1439376388345).

Almost surely, 2^{2878752776689} is an apocalyptic number.

It is an amenable number.

2878752776689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878752776689 is an equidigital number, since it uses as much as digits as its factorization.

2878752776689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7965941760, while the sum is 82.

The spelling of 2878752776689 in words is "two trillion, eight hundred seventy-eight billion, seven hundred fifty-two million, seven hundred seventy-six thousand, six hundred eighty-nine".