57531628648 has 32 divisors (see below), whose sum is σ = 116179517160. Its totient is φ = 26550800640.

The previous prime is 57531628643. The next prime is 57531628717. The reversal of 57531628648 is 84682613575.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54222848164 + 3308780484 = 232858^2 + 57522^2 .

It is not an unprimeable number, because it can be changed into a prime (57531628643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367118 + ... + 2391298.

Almost surely, 2^57531628648 is an apocalyptic number.

It is an amenable number.

57531628648 is an abundant number, since it is smaller than the sum of its proper divisors (58647888512).

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

57531628648 is a wasteful number, since it uses less digits than its factorization.

57531628648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47077 (or 47073 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 57531628648 in words is "fifty-seven billion, five hundred thirty-one million, six hundred twenty-eight thousand, six hundred forty-eight".