771878242841 has 2 divisors, whose sum is σ = 771878242842. Its totient is φ = 771878242840.

The previous prime is 771878242829. The next prime is 771878242871. The reversal of 771878242841 is 148242878177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724037617216 + 47840625625 = 850904^2 + 218725^2 .

It is a cyclic number.

It is not a de Polignac number, because 771878242841 - 2³⁴ = 754698373657 is a prime.

It is not a weakly prime, because it can be changed into another prime (771878242871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385939121420 + 385939121421.

It is an arithmetic number, because the mean of its divisors is an integer number (385939121421).

Almost surely, 2^771878242841 is an apocalyptic number.

It is an amenable number.

771878242841 is a deficient number, since it is larger than the sum of its proper divisors (1).

771878242841 is an equidigital number, since it uses as much as digits as its factorization.

771878242841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11239424, while the sum is 59.

The spelling of 771878242841 in words is "seven hundred seventy-one billion, eight hundred seventy-eight million, two hundred forty-two thousand, eight hundred forty-one".