57378486440 has 128 divisors (see below), whose sum is σ = 143152773120. Its totient is φ = 20522937600.

The previous prime is 57378486433. The next prime is 57378486461. The reversal of 57378486440 is 4468487375.

It is a super-2 number, since 2×57378486440² (a number of 22 digits) contains 22 as substring.

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, 31336325 + ... + 31338155.

It is an arithmetic number, because the mean of its divisors is an integer number (1118381040).

Almost surely, 2^57378486440 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 57378486440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71576386560).

57378486440 is an abundant number, since it is smaller than the sum of its proper divisors (85774286680).

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

57378486440 is a wasteful number, since it uses less digits than its factorization.

57378486440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 56.

The spelling of 57378486440 in words is "fifty-seven billion, three hundred seventy-eight million, four hundred eighty-six thousand, four hundred forty".