57533282778 has 8 divisors (see below), whose sum is σ = 115066565568. Its totient is φ = 19177760924.

The previous prime is 57533282749. The next prime is 57533282789. The reversal of 57533282778 is 87728233575.

It is a sphenic number, since it is the product of 3 distinct primes.

57533282778 is an admirable number.

It is a super-2 number, since 2×57533282778² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4794440226 + ... + 4794440237.

It is an arithmetic number, because the mean of its divisors is an integer number (14383320696).

Almost surely, 2^57533282778 is an apocalyptic number.

57533282778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57533282778 is a wasteful number, since it uses less digits than its factorization.

57533282778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588880468.

The product of its digits is 19756800, while the sum is 57.

The spelling of 57533282778 in words is "fifty-seven billion, five hundred thirty-three million, two hundred eighty-two thousand, seven hundred seventy-eight".