57123043320 has 64 divisors (see below), whose sum is σ = 195850437120. Its totient is φ = 13056695424.

The previous prime is 57123043309. The next prime is 57123043343. The reversal of 57123043320 is 2334032175.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34000972 + ... + 34002651.

It is an arithmetic number, because the mean of its divisors is an integer number (3060163080).

Almost surely, 2^57123043320 is an apocalyptic number.

It is an amenable number.

57123043320 is an abundant number, since it is smaller than the sum of its proper divisors (138727393800).

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

57123043320 is a wasteful number, since it uses less digits than its factorization.

57123043320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68003644 (or 68003640 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

Adding to 57123043320 its reverse (2334032175), we get a palindrome (59457075495).

The spelling of 57123043320 in words is "fifty-seven billion, one hundred twenty-three million, forty-three thousand, three hundred twenty".