5120771409 has 12 divisors (see below), whose sum is σ = 7965644596. Its totient is φ = 3151243872.

The previous prime is 5120771371. The next prime is 5120771413. The reversal of 5120771409 is 9041770215.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 394896384 + 4725875025 = 19872^2 + 68745^2 .

It is not a de Polignac number, because 5120771409 - 2⁸ = 5120771153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5120771429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21883522 + ... + 21883755.

Almost surely, 2^5120771409 is an apocalyptic number.

It is an amenable number.

5120771409 is a deficient number, since it is larger than the sum of its proper divisors (2844873187).

5120771409 is a wasteful number, since it uses less digits than its factorization.

5120771409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43767296 (or 43767293 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 5120771409 is about 71559.5654612296. The cubic root of 5120771409 is about 1723.6343075906.

The spelling of 5120771409 in words is "five billion, one hundred twenty million, seven hundred seventy-one thousand, four hundred nine".