73326682521 has 9 divisors (see below), whose sum is σ = 105917492629. Its totient is φ = 48883913436.

The previous prime is 73326682453. The next prime is 73326682523. The reversal of 73326682521 is 12528662337.

The square root of 73326682521 is 270789.

It is a perfect power (a square), and thus also a powerful number.

73326682521 is a `hidden beast` number, since 7 + 332 + 6 + 68 + 252 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 73326682521 - 2⁷ = 73326682393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73326682523) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 767236 + ... + 857498.

Almost surely, 2^73326682521 is an apocalyptic number.

73326682521 is the 270789-th square number.

73326682521 is the 135395-th centered octagonal number.

It is an amenable number.

73326682521 is a deficient number, since it is larger than the sum of its proper divisors (32590810108).

73326682521 is an frugal number, since it uses more digits than its factorization.

73326682521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180532 (or 90266 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 73326682521 in words is "seventy-three billion, three hundred twenty-six million, six hundred eighty-two thousand, five hundred twenty-one".