73324405561 has 8 divisors (see below), whose sum is σ = 80175858048. Its totient is φ = 66503886000.

The previous prime is 73324405489. The next prime is 73324405573. The reversal of 73324405561 is 16550442337.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73324405561 - 2¹⁹ = 73323881273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73324405961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7728270 + ... + 7737751.

It is an arithmetic number, because the mean of its divisors is an integer number (10021982256).

Almost surely, 2^73324405561 is an apocalyptic number.

It is an amenable number.

73324405561 is a deficient number, since it is larger than the sum of its proper divisors (6851452487).

73324405561 is a wasteful number, since it uses less digits than its factorization.

73324405561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15466463.

The product of its (nonzero) digits is 302400, while the sum is 40.

Adding to 73324405561 its reverse (16550442337), we get a palindrome (89874847898).

The spelling of 73324405561 in words is "seventy-three billion, three hundred twenty-four million, four hundred five thousand, five hundred sixty-one".