2766391801 has 2 divisors, whose sum is σ = 2766391802. Its totient is φ = 2766391800.

The previous prime is 2766391787. The next prime is 2766391813. The reversal of 2766391801 is 1081936672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2127515625 + 638876176 = 46125^2 + 25276^2 .

It is a cyclic number.

It is not a de Polignac number, because 2766391801 - 2⁹ = 2766391289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2766391841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383195900 + 1383195901.

It is an arithmetic number, because the mean of its divisors is an integer number (1383195901).

Almost surely, 2^2766391801 is an apocalyptic number.

It is an amenable number.

2766391801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2766391801 is an equidigital number, since it uses as much as digits as its factorization.

2766391801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 2766391801 is about 52596.4998930537. The cubic root of 2766391801 is about 1403.7978176637.

The spelling of 2766391801 in words is "two billion, seven hundred sixty-six million, three hundred ninety-one thousand, eight hundred one".