57172011648 has 128 divisors (see below), whose sum is σ = 156196288320. Its totient is φ = 18515091456.

The previous prime is 57172011641. The next prime is 57172011667. The reversal of 57172011648 is 84611027175.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (57172011641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11179140 + ... + 11184252.

Almost surely, 2^57172011648 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 57172011648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78098144160).

57172011648 is an abundant number, since it is smaller than the sum of its proper divisors (99024276672).

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

57172011648 is a wasteful number, since it uses less digits than its factorization.

57172011648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5942 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 57172011648 in words is "fifty-seven billion, one hundred seventy-two million, eleven thousand, six hundred forty-eight".