5213523870845 has 8 divisors (see below), whose sum is σ = 6256251185976. Its totient is φ = 4170804069376.

The previous prime is 5213523870817. The next prime is 5213523870883. The reversal of 5213523870845 is 5480783253125.

It can be written as a sum of positive squares in 4 ways, for example, as 1035890377369 + 4177633493476 = 1017787^2 + 2043926^2 .

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 5213523870845 - 2¹⁰ = 5213523869821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218552 + ... + 3236481.

It is an arithmetic number, because the mean of its divisors is an integer number (782031398247).

Almost surely, 2^{5213523870845} is an apocalyptic number.

It is an amenable number.

5213523870845 is a deficient number, since it is larger than the sum of its proper divisors (1042727315131).

5213523870845 is a wasteful number, since it uses less digits than its factorization.

5213523870845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756831.

The product of its (nonzero) digits is 8064000, while the sum is 53.

The spelling of 5213523870845 in words is "five trillion, two hundred thirteen billion, five hundred twenty-three million, eight hundred seventy thousand, eight hundred forty-five".