57771320448 has 64 divisors (see below), whose sum is σ = 153494863200. Its totient is φ = 19252113408.

The previous prime is 57771320441. The next prime is 57771320501. The reversal of 57771320448 is 84402317775.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 57771320397 and 57771320406.

It is not an unprimeable number, because it can be changed into a prime (57771320441) 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, 1648840 + ... + 1683512.

Almost surely, 2^57771320448 is an apocalyptic number.

It is an amenable number.

57771320448 is an abundant number, since it is smaller than the sum of its proper divisors (95723542752).

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

57771320448 is a wasteful number, since it uses less digits than its factorization.

57771320448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39029 (or 39017 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 57771320448 in words is "fifty-seven billion, seven hundred seventy-one million, three hundred twenty thousand, four hundred forty-eight".