5221705540685 has 4 divisors (see below), whose sum is σ = 6266046648828. Its totient is φ = 4177364432544.

The previous prime is 5221705540679. The next prime is 5221705540687. The reversal of 5221705540685 is 5860455071225.

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 687927583396 + 4533777957289 = 829414^2 + 2129267^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221705540685 - 2⁴ = 5221705540669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221705540687) 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, 522170554064 + ... + 522170554073.

It is an arithmetic number, because the mean of its divisors is an integer number (1566511662207).

Almost surely, 2^{5221705540685} is an apocalyptic number.

It is an amenable number.

5221705540685 is a deficient number, since it is larger than the sum of its proper divisors (1044341108143).

5221705540685 is a wasteful number, since it uses less digits than its factorization.

5221705540685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044341108142.

The product of its (nonzero) digits is 3360000, while the sum is 50.

The spelling of 5221705540685 in words is "five trillion, two hundred twenty-one billion, seven hundred five million, five hundred forty thousand, six hundred eighty-five".