57640738849 has 8 divisors (see below), whose sum is σ = 61176345768. Its totient is φ = 54121240320.

The previous prime is 57640738847. The next prime is 57640738873. The reversal of 57640738849 is 94883704675.

It is a happy number.

57640738849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14348446225 + 43292292624 = 119785^2 + 208068^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57640738849 - 2¹ = 57640738847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57640738847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4019722 + ... + 4034035.

It is an arithmetic number, because the mean of its divisors is an integer number (7647043221).

Almost surely, 2^57640738849 is an apocalyptic number.

It is an amenable number.

57640738849 is a deficient number, since it is larger than the sum of its proper divisors (3535606919).

57640738849 is a wasteful number, since it uses less digits than its factorization.

57640738849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8054195.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 57640738849 in words is "fifty-seven billion, six hundred forty million, seven hundred thirty-eight thousand, eight hundred forty-nine".