57000816738 has 24 divisors (see below), whose sum is σ = 125193577548. Its totient is φ = 18739994112.

The previous prime is 57000816709. The next prime is 57000816751. The reversal of 57000816738 is 83761800075.

57000816738 is a `hidden beast` number, since 570 + 0 + 0 + 8 + 1 + 6 + 73 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56995355169 + 5461569 = 238737^2 + 2337^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57000816693 and 57000816702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21688495 + ... + 21691122.

Almost surely, 2^57000816738 is an apocalyptic number.

57000816738 is an abundant number, since it is smaller than the sum of its proper divisors (68192760810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57000816738 is a wasteful number, since it uses less digits than its factorization.

57000816738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43379698 (or 43379695 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 57000816738 in words is "fifty-seven billion, eight hundred sixteen thousand, seven hundred thirty-eight".