57815140609 has 8 divisors (see below), whose sum is σ = 58125268520. Its totient is φ = 57505593600.

The previous prime is 57815140553. The next prime is 57815140633. The reversal of 57815140609 is 90604151875.

It can be written as a sum of positive squares in 4 ways, for example, as 31733859600 + 26081281009 = 178140^2 + 161497^2 .

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 57815140609 - 2¹⁵ = 57815107841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57815140639) 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, 55099 + ... + 344479.

It is an arithmetic number, because the mean of its divisors is an integer number (7265658565).

Almost surely, 2^57815140609 is an apocalyptic number.

It is an amenable number.

57815140609 is a deficient number, since it is larger than the sum of its proper divisors (310127911).

57815140609 is a wasteful number, since it uses less digits than its factorization.

57815140609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290451.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 57815140609 in words is "fifty-seven billion, eight hundred fifteen million, one hundred forty thousand, six hundred nine".