73243634238 has 20 divisors (see below), whose sum is σ = 164119995600. Its totient is φ = 24414544692.

The previous prime is 73243634237. The next prime is 73243634267. The reversal of 73243634238 is 83243634237.

73243634238 is a `hidden beast` number, since 7 + 3 + 2 + 4 + 3 + 634 + 2 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 73243634193 and 73243634202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73243634237) 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 9 ways as a sum of consecutive naturals, for example, 226060438 + ... + 226060761.

It is an arithmetic number, because the mean of its divisors is an integer number (8205999780).

Almost surely, 2^73243634238 is an apocalyptic number.

73243634238 is an abundant number, since it is smaller than the sum of its proper divisors (90876361362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73243634238 is a wasteful number, since it uses less digits than its factorization.

73243634238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452121213 (or 452121204 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 45.

Subtracting 73243634238 from its reverse (83243634237), we obtain a palindrome (9999999999).

The spelling of 73243634238 in words is "seventy-three billion, two hundred forty-three million, six hundred thirty-four thousand, two hundred thirty-eight".