57280621881 has 8 divisors (see below), whose sum is σ = 87284757184. Its totient is φ = 32731783920.

The previous prime is 57280621859. The next prime is 57280621897. The reversal of 57280621881 is 18812608275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57280621881 - 2¹¹ = 57280619833 is a prime.

It is a super-2 number, since 2×57280621881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57280621881.

It is not an unprimeable number, because it can be changed into a prime (57280625881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363824310 + ... + 1363824351.

It is an arithmetic number, because the mean of its divisors is an integer number (10910594648).

Almost surely, 2^57280621881 is an apocalyptic number.

It is an amenable number.

57280621881 is a deficient number, since it is larger than the sum of its proper divisors (30004135303).

57280621881 is a wasteful number, since it uses less digits than its factorization.

57280621881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727648671.

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 57280621881 in words is "fifty-seven billion, two hundred eighty million, six hundred twenty-one thousand, eight hundred eighty-one".