57575646640 has 40 divisors (see below), whose sum is σ = 134346691440. Its totient is φ = 22947108096.

The previous prime is 57575646571. The next prime is 57575646641. The reversal of 57575646640 is 4664657575.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (57575646641) 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, 1276930 + ... + 1321249.

It is an arithmetic number, because the mean of its divisors is an integer number (3358667286).

Almost surely, 2^57575646640 is an apocalyptic number.

It is an amenable number.

57575646640 is an abundant number, since it is smaller than the sum of its proper divisors (76771044800).

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

57575646640 is a wasteful number, since it uses less digits than its factorization.

57575646640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598469 (or 2598463 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 55.

The spelling of 57575646640 in words is "fifty-seven billion, five hundred seventy-five million, six hundred forty-six thousand, six hundred forty".