57321020809 has 8 divisors (see below), whose sum is σ = 61732927872. Its totient is φ = 52909484880.

The previous prime is 57321020753. The next prime is 57321020819. The reversal of 57321020809 is 90802012375.

57321020809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57321020809 - 2⁹ = 57321020297 is a prime.

It is a super-3 number, since 3×57321020809³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57321020819) 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, 284994 + ... + 442564.

It is an arithmetic number, because the mean of its divisors is an integer number (7716615984).

Almost surely, 2^57321020809 is an apocalyptic number.

It is an amenable number.

57321020809 is a deficient number, since it is larger than the sum of its proper divisors (4411907063).

57321020809 is a wasteful number, since it uses less digits than its factorization.

57321020809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185567.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 57321020809 in words is "fifty-seven billion, three hundred twenty-one million, twenty thousand, eight hundred nine".