57212881789440 has 320 divisors, whose sum is σ = 197152437436416. Its totient is φ = 14070259187712.

The previous prime is 57212881789439. The next prime is 57212881789457. The reversal of 57212881789440 is 4498718821275.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 108862977 + ... + 109387263.

Almost surely, 2^{57212881789440} 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 57212881789440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98576218718208).

57212881789440 is an abundant number, since it is smaller than the sum of its proper divisors (139939555646976).

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

57212881789440 is a wasteful number, since it uses less digits than its factorization.

57212881789440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525419 (or 525403 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 66.

The spelling of 57212881789440 in words is "fifty-seven trillion, two hundred twelve billion, eight hundred eighty-one million, seven hundred eighty-nine thousand, four hundred forty".