775245384443 has 2 divisors, whose sum is σ = 775245384444. Its totient is φ = 775245384442.

The previous prime is 775245384341. The next prime is 775245384491. The reversal of 775245384443 is 344483542577.

775245384443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (344483542577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 775245384443 - 2¹⁸ = 775245122299 is a prime.

It is a super-2 number, since 2×775245384443² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (775215384443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387622692221 + 387622692222.

It is an arithmetic number, because the mean of its divisors is an integer number (387622692222).

Almost surely, 2^775245384443 is an apocalyptic number.

775245384443 is a deficient number, since it is larger than the sum of its proper divisors (1).

775245384443 is an equidigital number, since it uses as much as digits as its factorization.

775245384443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45158400, while the sum is 56.

The spelling of 775245384443 in words is "seven hundred seventy-five billion, two hundred forty-five million, three hundred eighty-four thousand, four hundred forty-three".