73516560221 has 16 divisors (see below), whose sum is σ = 81460579200. Its totient is φ = 65916970560.

The previous prime is 73516560203. The next prime is 73516560223. The reversal of 73516560221 is 12206561537.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73516560221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73516560223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262121 + ... + 464478.

It is an arithmetic number, because the mean of its divisors is an integer number (5091286200).

Almost surely, 2^73516560221 is an apocalyptic number.

It is an amenable number.

73516560221 is a deficient number, since it is larger than the sum of its proper divisors (7944018979).

73516560221 is a wasteful number, since it uses less digits than its factorization.

73516560221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726836.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 73516560221 in words is "seventy-three billion, five hundred sixteen million, five hundred sixty thousand, two hundred twenty-one".