5208720550505 has 8 divisors (see below), whose sum is σ = 6284997615624. Its totient is φ = 4143954470400.

The previous prime is 5208720550471. The next prime is 5208720550571. The reversal of 5208720550505 is 5050550278025.

It can be written as a sum of positive squares in 4 ways, for example, as 31835123776 + 5176885426729 = 178424^2 + 2275277^2 .

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

It is not a de Polignac number, because 5208720550505 - 2³⁰ = 5207646808681 is a prime.

It is a super-2 number, since 2×5208720550505² (a number of 26 digits) contains 22 as substring.

It is a Duffinian 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, 2877745256 + ... + 2877747065.

It is an arithmetic number, because the mean of its divisors is an integer number (785624701953).

Almost surely, 2^{5208720550505} is an apocalyptic number.

It is an amenable number.

5208720550505 is a deficient number, since it is larger than the sum of its proper divisors (1076277065119).

5208720550505 is a wasteful number, since it uses less digits than its factorization.

5208720550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755492507.

The product of its (nonzero) digits is 700000, while the sum is 44.

The spelling of 5208720550505 in words is "five trillion, two hundred eight billion, seven hundred twenty million, five hundred fifty thousand, five hundred five".