57321824861 has 4 divisors (see below), whose sum is σ = 65510656992. Its totient is φ = 49132992732.

The previous prime is 57321824851. The next prime is 57321824881. The reversal of 57321824861 is 16842812375.

57321824861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57321824861 - 2⁶ = 57321824797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57321824851) 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, 4094416055 + ... + 4094416068.

It is an arithmetic number, because the mean of its divisors is an integer number (16377664248).

Almost surely, 2^57321824861 is an apocalyptic number.

It is an amenable number.

57321824861 is a deficient number, since it is larger than the sum of its proper divisors (8188832131).

57321824861 is an equidigital number, since it uses as much as digits as its factorization.

57321824861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8188832130.

The product of its digits is 645120, while the sum is 47.

The spelling of 57321824861 in words is "fifty-seven billion, three hundred twenty-one million, eight hundred twenty-four thousand, eight hundred sixty-one".