52728705905 has 8 divisors (see below), whose sum is σ = 63736305192. Its totient is φ = 41875059328.

The previous prime is 52728705901. The next prime is 52728705923. The reversal of 52728705905 is 50950782725.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109851361 + 52618854544 = 10481^2 + 229388^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52728705905 - 2² = 52728705901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52728705901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38487422 + ... + 38488791.

It is an arithmetic number, because the mean of its divisors is an integer number (7967038149).

Almost surely, 2^52728705905 is an apocalyptic number.

It is an amenable number.

52728705905 is a deficient number, since it is larger than the sum of its proper divisors (11007599287).

52728705905 is a wasteful number, since it uses less digits than its factorization.

52728705905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76976355.

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 52728705905 in words is "fifty-two billion, seven hundred twenty-eight million, seven hundred five thousand, nine hundred five".