52765758721 has 16 divisors (see below), whose sum is σ = 57356735184. Its totient is φ = 48251234304.

The previous prime is 52765758701. The next prime is 52765758733. The reversal of 52765758721 is 12785756725.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7441477696 + 45324281025 = 86264^2 + 212895^2 .

It is not a de Polignac number, because 52765758721 - 2³³ = 44175824129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52765758701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3278125 + ... + 3294181.

It is an arithmetic number, because the mean of its divisors is an integer number (3584795949).

Almost surely, 2^52765758721 is an apocalyptic number.

It is an amenable number.

52765758721 is a deficient number, since it is larger than the sum of its proper divisors (4590976463).

52765758721 is a wasteful number, since it uses less digits than its factorization.

52765758721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18420.

The product of its digits is 8232000, while the sum is 55.

The spelling of 52765758721 in words is "fifty-two billion, seven hundred sixty-five million, seven hundred fifty-eight thousand, seven hundred twenty-one".