57649008709 has 4 divisors (see below), whose sum is σ = 57659593900. Its totient is φ = 57638423520.

The previous prime is 57649008701. The next prime is 57649008721. The reversal of 57649008709 is 90780094675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24042053025 + 33606955684 = 155055^2 + 183322^2 .

It is a cyclic number.

It is not a de Polignac number, because 57649008709 - 2³ = 57649008701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57649008709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57649008701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5284422 + ... + 5295319.

It is an arithmetic number, because the mean of its divisors is an integer number (14414898475).

Almost surely, 2^57649008709 is an apocalyptic number.

It is an amenable number.

57649008709 is a deficient number, since it is larger than the sum of its proper divisors (10585191).

57649008709 is a wasteful number, since it uses less digits than its factorization.

57649008709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10585190.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 57649008709 in words is "fifty-seven billion, six hundred forty-nine million, eight thousand, seven hundred nine".