5205205377 has 6 divisors (see below), whose sum is σ = 7518630002. Its totient is φ = 3470136912.

The previous prime is 5205205361. The next prime is 5205205391. The reversal of 5205205377 is 7735025025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4824135936 + 381069441 = 69456^2 + 19521^2 .

It is not a de Polignac number, because 5205205377 - 2⁴ = 5205205361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5205209377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289178068 + ... + 289178085.

Almost surely, 2^5205205377 is an apocalyptic number.

It is an amenable number.

5205205377 is a deficient number, since it is larger than the sum of its proper divisors (2313424625).

5205205377 is a wasteful number, since it uses less digits than its factorization.

5205205377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578356159 (or 578356156 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 5205205377 is about 72147.1092768103. The cubic root of 5205205377 is about 1733.0561077797.

The spelling of 5205205377 in words is "five billion, two hundred five million, two hundred five thousand, three hundred seventy-seven".