57172481856 has 336 divisors, whose sum is σ = 207023817600. Its totient is φ = 15373725696.

The previous prime is 57172481831. The next prime is 57172481911. The reversal of 57172481856 is 65818427175.

57172481856 is a `hidden beast` number, since 571 + 7 + 2 + 4 + 8 + 18 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1419565 + ... + 1459283.

Almost surely, 2^57172481856 is an apocalyptic number.

57172481856 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 57172481856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103511908800).

57172481856 is an abundant number, since it is smaller than the sum of its proper divisors (149851335744).

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

57172481856 is a wasteful number, since it uses less digits than its factorization.

57172481856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39771 (or 39748 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The spelling of 57172481856 in words is "fifty-seven billion, one hundred seventy-two million, four hundred eighty-one thousand, eight hundred fifty-six".