73333965640 has 32 divisors (see below), whose sum is σ = 177693841080. Its totient is φ = 27077156352.

The previous prime is 73333965629. The next prime is 73333965643. The reversal of 73333965640 is 4656933337.

It can be written as a sum of positive squares in 4 ways, for example, as 51553518916 + 21780446724 = 227054^2 + 147582^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (73333965643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70512909 + ... + 70513948.

Almost surely, 2^73333965640 is an apocalyptic number.

It is an amenable number.

73333965640 is an abundant number, since it is smaller than the sum of its proper divisors (104359875440).

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

73333965640 is a wasteful number, since it uses less digits than its factorization.

73333965640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141026881 (or 141026877 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 49.

The spelling of 73333965640 in words is "seventy-three billion, three hundred thirty-three million, nine hundred sixty-five thousand, six hundred forty".