57445519656 has 96 divisors (see below), whose sum is σ = 167543583840. Its totient is φ = 16365589632.

The previous prime is 57445519639. The next prime is 57445519661. The reversal of 57445519656 is 65691554475.

It is a junction number, because it is equal to n+sod(n) for n = 57445519596 and 57445519605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337686 + ... + 478458.

It is an arithmetic number, because the mean of its divisors is an integer number (1745245665).

Almost surely, 2^57445519656 is an apocalyptic number.

57445519656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57445519656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83771791920).

57445519656 is an abundant number, since it is smaller than the sum of its proper divisors (110098064184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57445519656 is a wasteful number, since it uses less digits than its factorization.

57445519656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141143 (or 141132 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 57.

The spelling of 57445519656 in words is "fifty-seven billion, four hundred forty-five million, five hundred nineteen thousand, six hundred fifty-six".