7533540209 has 12 divisors (see below), whose sum is σ = 8216334000. Its totient is φ = 6903986544.

The previous prime is 7533540167. The next prime is 7533540241. The reversal of 7533540209 is 9020453357.

It is not a de Polignac number, because 7533540209 - 2¹² = 7533536113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7533540269) 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, 136859 + ... + 183840.

It is an arithmetic number, because the mean of its divisors is an integer number (684694500).

Almost surely, 2^7533540209 is an apocalyptic number.

It is an amenable number.

7533540209 is a deficient number, since it is larger than the sum of its proper divisors (682793791).

7533540209 is a wasteful number, since it uses less digits than its factorization.

7533540209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320864 (or 320851 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 7533540209 is about 86795.9688522457. The cubic root of 7533540209 is about 1960.3473812471.

The spelling of 7533540209 in words is "seven billion, five hundred thirty-three million, five hundred forty thousand, two hundred nine".