57129440016 has 160 divisors (see below), whose sum is σ = 165310419456. Its totient is φ = 16850560000.

The previous prime is 57129439979. The next prime is 57129440023. The reversal of 57129440016 is 61004492175.

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, 10106791 + ... + 10112441.

Almost surely, 2^57129440016 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 57129440016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82655209728).

57129440016 is an abundant number, since it is smaller than the sum of its proper divisors (108180979440).

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

57129440016 is a wasteful number, since it uses less digits than its factorization.

57129440016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181 (or 6175 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 57129440016 in words is "fifty-seven billion, one hundred twenty-nine million, four hundred forty thousand, sixteen".