57146320440 has 144 divisors (see below), whose sum is σ = 204144759000. Its totient is φ = 13853642880.

The previous prime is 57146320423. The next prime is 57146320459. The reversal of 57146320440 is 4402364175.

57146320440 is a `hidden beast` number, since 5 + 7 + 14 + 632 + 0 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 57146320395 and 57146320404.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 612390 + ... + 699509.

Almost surely, 2^57146320440 is an apocalyptic number.

It is an amenable number.

57146320440 is an abundant number, since it is smaller than the sum of its proper divisors (146998438560).

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

57146320440 is a wasteful number, since it uses less digits than its factorization.

57146320440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311938 (or 1311920 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 57146320440 in words is "fifty-seven billion, one hundred forty-six million, three hundred twenty thousand, four hundred forty".