73645108340 has 12 divisors (see below), whose sum is σ = 154654727556. Its totient is φ = 29458043328.

The previous prime is 73645108331. The next prime is 73645108343. The reversal of 73645108340 is 4380154637.

It can be written as a sum of positive squares in 2 ways, for example, as 57472390756 + 16172717584 = 239734^2 + 127172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73645108343) 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 3 ways as a sum of consecutive naturals, for example, 1841127689 + ... + 1841127728.

It is an arithmetic number, because the mean of its divisors is an integer number (12887893963).

Almost surely, 2^73645108340 is an apocalyptic number.

It is an amenable number.

73645108340 is an abundant number, since it is smaller than the sum of its proper divisors (81009619216).

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

73645108340 is a wasteful number, since it uses less digits than its factorization.

73645108340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682255426 (or 3682255424 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 73645108340 in words is "seventy-three billion, six hundred forty-five million, one hundred eight thousand, three hundred forty".