775369984771 has 2 divisors, whose sum is σ = 775369984772. Its totient is φ = 775369984770.

The previous prime is 775369984759. The next prime is 775369984801. The reversal of 775369984771 is 177489963577.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 775369984771 - 2¹⁵ = 775369952003 is a prime.

It is a super-2 number, since 2×775369984771² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 775369984694 and 775369984703.

It is not a weakly prime, because it can be changed into another prime (775369982771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387684992385 + 387684992386.

It is an arithmetic number, because the mean of its divisors is an integer number (387684992386).

Almost surely, 2^775369984771 is an apocalyptic number.

775369984771 is a deficient number, since it is larger than the sum of its proper divisors (1).

775369984771 is an equidigital number, since it uses as much as digits as its factorization.

775369984771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560105280, while the sum is 73.

The spelling of 775369984771 in words is "seven hundred seventy-five billion, three hundred sixty-nine million, nine hundred eighty-four thousand, seven hundred seventy-one".