52684067845 has 4 divisors (see below), whose sum is σ = 63220881420. Its totient is φ = 42147254272.

The previous prime is 52684067833. The next prime is 52684067897. The reversal of 52684067845 is 54876048625.

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 22031761761 + 30652306084 = 148431^2 + 175078^2 .

It is a cyclic number.

It is not a de Polignac number, because 52684067845 - 2²³ = 52675679237 is a prime.

It is a super-2 number, since 2×52684067845² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5268406780 + ... + 5268406789.

It is an arithmetic number, because the mean of its divisors is an integer number (15805220355).

Almost surely, 2^52684067845 is an apocalyptic number.

It is an amenable number.

52684067845 is a deficient number, since it is larger than the sum of its proper divisors (10536813575).

52684067845 is a wasteful number, since it uses less digits than its factorization.

52684067845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536813574.

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 52684067845 in words is "fifty-two billion, six hundred eighty-four million, sixty-seven thousand, eight hundred forty-five".