57218755776 has 224 divisors, whose sum is σ = 192754544640. Its totient is φ = 14570164224.

The previous prime is 57218755753. The next prime is 57218755813. The reversal of 57218755776 is 67755781275.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450225 + ... + 563151.

It is an arithmetic number, because the mean of its divisors is an integer number (860511360).

Almost surely, 2^57218755776 is an apocalyptic number.

57218755776 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 57218755776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96377272320).

57218755776 is an abundant number, since it is smaller than the sum of its proper divisors (135535788864).

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

57218755776 is a wasteful number, since it uses less digits than its factorization.

57218755776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112991 (or 112981 counting only the distinct ones).

The product of its digits is 28812000, while the sum is 60.

The spelling of 57218755776 in words is "fifty-seven billion, two hundred eighteen million, seven hundred fifty-five thousand, seven hundred seventy-six".