2720533509 has 6 divisors (see below), whose sum is σ = 3929659526. Its totient is φ = 1813689000.

The previous prime is 2720533441. The next prime is 2720533537. The reversal of 2720533509 is 9053350272.

2720533509 is a `hidden beast` number, since 2 + 72 + 0 + 533 + 50 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2622464100 + 98069409 = 51210^2 + 9903^2 .

It is not a de Polignac number, because 2720533509 - 2¹¹ = 2720531461 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 (2720533549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151140742 + ... + 151140759.

Almost surely, 2^2720533509 is an apocalyptic number.

It is an amenable number.

2720533509 is a deficient number, since it is larger than the sum of its proper divisors (1209126017).

2720533509 is a wasteful number, since it uses less digits than its factorization.

2720533509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302281507 (or 302281504 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 2720533509 is about 52158.7337748914. The cubic root of 2720533509 is about 1395.9976691792.

The spelling of 2720533509 in words is "two billion, seven hundred twenty million, five hundred thirty-three thousand, five hundred nine".