2765381794897 has 2 divisors, whose sum is σ = 2765381794898. Its totient is φ = 2765381794896.

The previous prime is 2765381794891. The next prime is 2765381794939. The reversal of 2765381794897 is 7984971835672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2425482300816 + 339899494081 = 1557396^2 + 583009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2765381794897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2765381794891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382690897448 + 1382690897449.

It is an arithmetic number, because the mean of its divisors is an integer number (1382690897449).

Almost surely, 2^{2765381794897} is an apocalyptic number.

It is an amenable number.

2765381794897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765381794897 is an equidigital number, since it uses as much as digits as its factorization.

2765381794897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280240640, while the sum is 76.

The spelling of 2765381794897 in words is "two trillion, seven hundred sixty-five billion, three hundred eighty-one million, seven hundred ninety-four thousand, eight hundred ninety-seven".