57061216608 has 96 divisors (see below), whose sum is σ = 163469456640. Its totient is φ = 17284200960.

The previous prime is 57061216607. The next prime is 57061216627. The reversal of 57061216608 is 80661216075.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 57061216608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57061216607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2943973 + ... + 2963291.

It is an arithmetic number, because the mean of its divisors is an integer number (1702806840).

Almost surely, 2^57061216608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57061216608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81734728320).

57061216608 is an abundant number, since it is smaller than the sum of its proper divisors (106408240032).

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

57061216608 is a wasteful number, since it uses less digits than its factorization.

57061216608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22140 (or 22132 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 57061216608 in words is "fifty-seven billion, sixty-one million, two hundred sixteen thousand, six hundred eight".