73406808128 has 28 divisors (see below), whose sum is σ = 145722629052. Its totient is φ = 36689295360.

The previous prime is 73406808113. The next prime is 73406808131. The reversal of 73406808128 is 82180860437.

It can be written as a sum of positive squares in 2 ways, for example, as 38733388864 + 34673419264 = 196808^2 + 186208^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51653 + ... + 386628.

It is an arithmetic number, because the mean of its divisors is an integer number (5204379609).

Almost surely, 2^73406808128 is an apocalyptic number.

It is an amenable number.

73406808128 is a deficient number, since it is larger than the sum of its proper divisors (72315820924).

73406808128 is a wasteful number, since it uses less digits than its factorization.

73406808128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440910 (or 440900 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 73406808128 in words is "seventy-three billion, four hundred six million, eight hundred eight thousand, one hundred twenty-eight".