775056673161 has 24 divisors (see below), whose sum is σ = 1168632718344. Its totient is φ = 494497820160.

The previous prime is 775056673159. The next prime is 775056673189. The reversal of 775056673161 is 161376650577.

775056673161 is a `hidden beast` number, since 7 + 7 + 5 + 0 + 566 + 73 + 1 + 6 + 1 = 666.

775056673161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 280840643136 + 494216030025 = 529944^2 + 703005^2 .

It is not a de Polignac number, because 775056673161 - 2¹ = 775056673159 is a prime.

It is a super-2 number, since 2×775056673161² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 775056673098 and 775056673107.

It is not an unprimeable number, because it can be changed into a prime (775056673661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19057536 + ... + 19098161.

It is an arithmetic number, because the mean of its divisors is an integer number (48693029931).

Almost surely, 2^775056673161 is an apocalyptic number.

It is an amenable number.

775056673161 is a deficient number, since it is larger than the sum of its proper divisors (393576045183).

775056673161 is a wasteful number, since it uses less digits than its factorization.

775056673161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38155801 (or 38155798 counting only the distinct ones).

The product of its (nonzero) digits is 5556600, while the sum is 54.

The spelling of 775056673161 in words is "seven hundred seventy-five billion, fifty-six million, six hundred seventy-three thousand, one hundred sixty-one".