57123020754 has 72 divisors (see below), whose sum is σ = 130529091420. Its totient is φ = 18051618816.

The previous prime is 57123020719. The next prime is 57123020767. The reversal of 57123020754 is 45702032175.

57123020754 is a `hidden beast` number, since 571 + 2 + 30 + 2 + 0 + 7 + 54 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39626874225 + 17496146529 = 199065^2 + 132273^2 .

It is a Curzon 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, 1049442 + ... + 1102530.

Almost surely, 2^57123020754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57123020754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65264545710).

57123020754 is an abundant number, since it is smaller than the sum of its proper divisors (73406070666).

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

57123020754 is a wasteful number, since it uses less digits than its factorization.

57123020754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53256 (or 53230 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 57123020754 in words is "fifty-seven billion, one hundred twenty-three million, twenty thousand, seven hundred fifty-four".