57854309821 has 8 divisors (see below), whose sum is σ = 72130048704. Its totient is φ = 45081280320.

The previous prime is 57854309819. The next prime is 57854309879. The reversal of 57854309821 is 12890345875.

It is a happy number.

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 57854309821 - 2¹ = 57854309819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57854309801) 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, 375677260 + ... + 375677413.

It is an arithmetic number, because the mean of its divisors is an integer number (9016256088).

Almost surely, 2^57854309821 is an apocalyptic number.

It is an amenable number.

57854309821 is a deficient number, since it is larger than the sum of its proper divisors (14275738883).

57854309821 is a wasteful number, since it uses less digits than its factorization.

57854309821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751354691.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 57854309821 in words is "fifty-seven billion, eight hundred fifty-four million, three hundred nine thousand, eight hundred twenty-one".