57217233920 has 176 divisors, whose sum is σ = 171123435648. Its totient is φ = 17833820160.

The previous prime is 57217233911. The next prime is 57217233923. The reversal of 57217233920 is 2933271275.

It is a tau number, because it is divible by the number of its divisors (176).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57217233923) 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, 321674 + ... + 466806.

It is an arithmetic number, because the mean of its divisors is an integer number (972292248).

Almost surely, 2^57217233920 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 57217233920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85561717824).

57217233920 is an abundant number, since it is smaller than the sum of its proper divisors (113906201728).

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

57217233920 is a wasteful number, since it uses less digits than its factorization.

57217233920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145176 (or 145158 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 57217233920 in words is "fifty-seven billion, two hundred seventeen million, two hundred thirty-three thousand, nine hundred twenty".