5445363777761 has 2 divisors, whose sum is σ = 5445363777762. Its totient is φ = 5445363777760.

The previous prime is 5445363777739. The next prime is 5445363777781. The reversal of 5445363777761 is 1677773635445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4130064449536 + 1315299328225 = 2032256^2 + 1146865^2 .

It is a cyclic number.

It is not a de Polignac number, because 5445363777761 - 2¹⁸ = 5445363515617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5445363777701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722681888880 + 2722681888881.

It is an arithmetic number, because the mean of its divisors is an integer number (2722681888881).

Almost surely, 2^{5445363777761} is an apocalyptic number.

It is an amenable number.

5445363777761 is a deficient number, since it is larger than the sum of its proper divisors (1).

5445363777761 is an equidigital number, since it uses as much as digits as its factorization.

5445363777761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311169600, while the sum is 65.

The spelling of 5445363777761 in words is "five trillion, four hundred forty-five billion, three hundred sixty-three million, seven hundred seventy-seven thousand, seven hundred sixty-one".