57728233901 has 4 divisors (see below), whose sum is σ = 62168867292. Its totient is φ = 53287600512.

The previous prime is 57728233891. The next prime is 57728233903. The reversal of 57728233901 is 10933282775.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13481532100 + 44246701801 = 116110^2 + 210349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57728233901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728233903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220316676 + ... + 2220316701.

It is an arithmetic number, because the mean of its divisors is an integer number (15542216823).

Almost surely, 2^57728233901 is an apocalyptic number.

It is an amenable number.

57728233901 is a deficient number, since it is larger than the sum of its proper divisors (4440633391).

57728233901 is a wasteful number, since it uses less digits than its factorization.

57728233901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440633390.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 57728233901 in words is "fifty-seven billion, seven hundred twenty-eight million, two hundred thirty-three thousand, nine hundred one".