73565251330 has 16 divisors (see below), whose sum is σ = 134915895864. Its totient is φ = 28870890880.

The previous prime is 73565251321. The next prime is 73565251339. The reversal of 73565251330 is 3315256537.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73565251321) and next prime (73565251339).

It can be written as a sum of positive squares in 4 ways, for example, as 49284444001 + 24280807329 = 222001^2 + 155823^2 .

It is not an unprimeable number, because it can be changed into a prime (73565251339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69400651 + ... + 69401710.

Almost surely, 2^73565251330 is an apocalyptic number.

73565251330 is a deficient number, since it is larger than the sum of its proper divisors (61350644534).

73565251330 is a wasteful number, since it uses less digits than its factorization.

73565251330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138802421.

The product of its (nonzero) digits is 283500, while the sum is 40.

The spelling of 73565251330 in words is "seventy-three billion, five hundred sixty-five million, two hundred fifty-one thousand, three hundred thirty".