7530721365 has 16 divisors (see below), whose sum is σ = 12329368128. Its totient is φ = 3922980096.

The previous prime is 7530721357. The next prime is 7530721369. The reversal of 7530721365 is 5631270357.

It is not a de Polignac number, because 7530721365 - 2³ = 7530721357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7530721369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5837124 + ... + 5838413.

It is an arithmetic number, because the mean of its divisors is an integer number (770585508).

Almost surely, 2^7530721365 is an apocalyptic number.

It is an amenable number.

7530721365 is a deficient number, since it is larger than the sum of its proper divisors (4798646763).

7530721365 is a wasteful number, since it uses less digits than its factorization.

7530721365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11675588.

The product of its (nonzero) digits is 132300, while the sum is 39.

The square root of 7530721365 is about 86779.7289981940. The cubic root of 7530721365 is about 1960.1028480149.

The spelling of 7530721365 in words is "seven billion, five hundred thirty million, seven hundred twenty-one thousand, three hundred sixty-five".