57456729844 has 48 divisors (see below), whose sum is σ = 103903724736. Its totient is φ = 27787161600.

The previous prime is 57456729833. The next prime is 57456729859. The reversal of 57456729844 is 44892765475.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10476327 + ... + 10481809.

It is an arithmetic number, because the mean of its divisors is an integer number (2164660932).

Almost surely, 2^57456729844 is an apocalyptic number.

It is an amenable number.

57456729844 is a deficient number, since it is larger than the sum of its proper divisors (46446994892).

57456729844 is a wasteful number, since it uses less digits than its factorization.

57456729844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256 (or 6254 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 61.

The spelling of 57456729844 in words is "fifty-seven billion, four hundred fifty-six million, seven hundred twenty-nine thousand, eight hundred forty-four".