57784382361 has 12 divisors (see below), whose sum is σ = 86344479780. Its totient is φ = 37194544800.

The previous prime is 57784382333. The next prime is 57784382371. The reversal of 57784382361 is 16328348775.

It is a happy number.

57784382361 is a `hidden beast` number, since 577 + 8 + 4 + 3 + 8 + 2 + 3 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36743139225 + 21041243136 = 191685^2 + 145056^2 .

It is not a de Polignac number, because 57784382361 - 2⁷ = 57784382233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57784382298 and 57784382307.

It is not an unprimeable number, because it can be changed into a prime (57784382371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110697790 + ... + 110698311.

It is an arithmetic number, because the mean of its divisors is an integer number (7195373315).

Almost surely, 2^57784382361 is an apocalyptic number.

It is an amenable number.

57784382361 is a deficient number, since it is larger than the sum of its proper divisors (28560097419).

57784382361 is a wasteful number, since it uses less digits than its factorization.

57784382361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221396136 (or 221396133 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 57784382361 in words is "fifty-seven billion, seven hundred eighty-four million, three hundred eighty-two thousand, three hundred sixty-one".